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Oilfield Services Companies in the UK: 2,100+ Active Firms (2026)
Oilfield services companies in the UK provide drilling, well, production, pipeline and late-life asset support for upstream energy operators.
Buying decisions tend to sit with operations, engineering, asset-integrity and procurement teams at upstream operators and their prime contractors. The sell-side mix spans drilling and well support, inspection, production maintenance, pipeline work, offshore logistics, decommissioning and specialist engineering. Engagements are usually B2B, project-led or framework-based, with buying cases tied to uptime, regulatory consent risk, emissions performance and crew availability. Scale sits closer to industrial services than software: field teams, certified equipment, logistics planning and liability cover matter as much as advisory work, and the better-fit cohort skews toward suppliers with sizeable turnover and employee bases rather than single-consultant engineering practices.
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Around 2,156 oilfield services companies are actively trading in the UK, a cohort shaped by North Sea offshore work and mature-basin asset upkeep rather than purely domestic onshore demand. Reported employment totals 4,614 people across the firms that publish headcount, so the visible workforce is not a full measure of contractor labour used on offshore projects. Commercial scale is uneven: 187 companies report turnover above £5M, while 305 have been incorporated since 2022. That mix points to a long tail of specialist suppliers alongside a smaller set able to support operator-grade procurement, assurance and mobilisation requirements.
Service providers do not have a standalone upstream licensing regime; their regulatory exposure usually flows through the operator licences, consents and project controls they support. The NSTA oversees UK offshore petroleum licensing and consents, including exploration, development, wells, production consents, pipeline works authorisations, and flaring and venting controls. Government review material also links the regime to carbon dioxide storage and offshore hydrogen pipeline transport and storage, widening the adjacent infrastructure context. For suppliers, the practical burden tends to sit in documentation, competence management, emissions controls, permit evidence and audit trails, particularly where work affects wells, production systems or pipeline integrity.
Demand appears tied less to frontier exploration than to mature-basin upkeep, integrity work and the operational costs of keeping offshore infrastructure safe while output declines. Buyers tend to favour suppliers that can document competence, mobilise crews and carry liability, which may leave smaller engineering consultancies competing around narrow specialisms. Consolidation is plausible where complementary inspection, well intervention, logistics and decommissioning capabilities can be bundled for operator procurement. The market also has an emissions-management overlay: flaring, venting and production-efficiency scrutiny should keep compliance evidence close to commercial discussions, even where the underlying job is mechanical or logistical.
2,156
Active firms
2026
187
Above £5M turnover
Larger reported operators
305
Recent incorporations
Since 2022
Key facts
About 8% of the trading cohort reports turnover above £5M (187 of 2,156 firms) — the rest sits below that revenue band.
14% of the cohort was incorporated since 2022 (305 firms), so a sizeable share is in its first few filing cycles.
The NSTA regulates UK offshore petroleum licensing and consents, including exploration, development, wells, production consents, pipeline works authorisations, and flaring and venting controls.
The Energy Act 2016 provides the statutory review framework for the NSTA’s offshore petroleum and carbon dioxide storage functions, with its remit expanded in September 2023 to include offshore hydrogen transport by pipeline and storage.
The NSTA’s 2025 review refers to net zero obligations, a 50% production-emissions reduction target by 2030 against a 2018 baseline, and stronger enforcement for flaring and venting consent exceedances.
The UK Continental Shelf is a mature basin: 47.7 billion boe had been produced by the end of 2024, while proven and probable reserves stood at 2.9 billion boe and contingent resources at 6.2 billion boe.
Norway remains the larger North Sea comparator, with 2024 production of about 240 million standard cubic metres of oil equivalent, stated as 1,510 million barrels of oil equivalent, the highest level since 2009.
Top UK oilfield services companies
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides asset management and operations support for oil and gas infrastructure, including offshore fields, pipelines, gas terminals and FPSOs. Offers brownfield engineering, project support, and…
Serves B2B clients in the UK Continental Shelf energy sector, including oil and gas operators and asset owners managing offshore fields, pipelines, terminals and related infrastructure.
Financial Health
StrongStrong · Hiring · 13% CAGR over 6y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDevelops and supplies well integrity and completion technologies for the oil and gas industry, including annulus pressure monitoring systems, casing barrier tools, flow control equipment, and…
Serves B2B energy-sector customers, primarily oil and gas operators and well owners, including teams responsible for well integrity, completions, intervention, production optimisation, subsea…
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 1y
Location
NORTH OFFSHORE LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsOperates offshore drilling rigs and marine assets, providing drilling services and rig charter to oil and gas operators. Manages fleet operations, crews, maintenance and safety systems for jack-up…
Serves B2B customers in the offshore energy sector, particularly oil and gas operators and drilling contractors seeking to charter jack-up rigs, living platforms and offshore crews for drilling and…
Financial Health
StableStable · Hiring · 6% CAGR over 3y
Location
MERMAID SUBSEA SERVICES (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides subsea engineering and offshore support services for the oil and gas industry, including inspection, installation, repair and maintenance (IRM), diving and ROV operations, cable and flexible…
Serves B2B offshore energy markets, including oil and gas majors, their contractors, renewables developers, and decommissioning project teams requiring subsea project support.
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
NOBLE CORP LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides offshore drilling services to oil and gas companies, operating a fleet of mobile offshore drilling units including drillships and jack-up rigs used for exploration and development wells in…
Serves oil and gas exploration and production companies requiring offshore drilling rigs and long-term drilling partnerships for deepwater and other offshore projects.
Financial Health
WeakWeak · -66% CAGR over 4y
Location
REACH SUBSEA UK LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides offshore subsea services including engineering and project management, seabed and geophysical surveys, positioning, inspection, maintenance and repair, and construction support using…
Serves B2B offshore energy and marine infrastructure clients, including oil and gas operators, pipeline and cable owners, and developers needing subsea survey, inspection, monitoring and construction…
Financial Health
WeakWeak · -86% CAGR over 2y
Location
SALTIRE PRESSURE CONTROL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides oilfield equipment rental and related services for drilling and abandonment operations, including drill pipe, tubing, drill collars and BOPs, alongside pressure testing, torque and testing,…
Serves oil and gas operators and drilling contractors worldwide, including teams sourcing drill pipe, tubing, drill collars and pressure-control tools for drilling and abandonment operations.
Financial Health
StableStable · -68% CAGR over 4y
Location
UNITY WELL INTEGRITY UK LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides well integrity management and intervention services for the upstream oil and gas industry, including maintenance, repair and life‑extension of wellheads, rental equipment, engineered…
Serves global upstream oil and gas operators, asset owners and decommissioning teams managing wells through production, late-life operations and abandonment.
Financial Health
HealthyHealthy · Growing · 4% CAGR over 2y
Location
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides offshore engineering and maintenance services for drilling contractors, specialising in subsea blowout preventers (BOPs), well control equipment, and subsea control systems. Services include…
Serves B2B offshore drilling contractors operating platforms, jack-ups, semi-submersibles and drillships, particularly teams responsible for BOPs, subsea systems and well control equipment in global…
Financial Health
HealthyHealthy · -71% CAGR over 4y
Location
THREE60 ENERGY WELLS UK LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides well engineering, well management and consultancy services for oil and gas operators, including well design, planning, drilling and completion support. Also delivers subsea, subsurface and…
Serves B2B clients in energy and adjacent sectors, including major oilfield operators, offshore and onshore energy asset owners, renewables and CCS developers, and organisations in marine, defence…
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 2y
Location
CODEX INTEGRITY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides engineering and technical support services to the oil and gas industry, focusing on asset integrity for offshore production facilities and onshore pipelines. Services include integrity…
Serves B2B energy operators managing offshore oil and gas production facilities, onshore pipelines and wider operating assets, with customers across regions including the UKCS, Europe, West Africa,…
Financial Health
StableStable · -70% CAGR over 4y
Location
HELMERICH & PAYNE TECHNOLOGIES UK LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides oil and gas drilling services and technologies, including land and offshore drilling rigs, automated drilling systems, well engineering, survey management, and real-time operations…
Serves upstream oil and gas operators, energy producers and well owners seeking land and offshore drilling partners, with a global B2B customer base.
Financial Health
StrongStrong · Hiring · 3% CAGR over 4y
Location
AF Offshore Decom UK Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides offshore oil and gas decommissioning services including platform preparation, heavy lift removal, subsea infrastructure recovery, and onshore dismantling, disposal and recycling of offshore…
Serves oil and gas operators and offshore energy asset owners planning decommissioning of platforms, vessels and subsea infrastructure, including projects in the North Sea and wider global offshore…
Financial Health
HealthyHealthy · Hiring · 123% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsSupplies oilfield products and provides services for drilling, completion and well intervention operations. Activities include equipment rental, coring services, product manufacturing, procurement,…
Sells to B2B customers in the energy sector, particularly drilling, completion and well intervention teams at oil, gas and geothermal operators and contractors, across onshore and offshore operations.
Financial Health
HealthyHealthy · Hiring · 68% CAGR over 4y
Location
KATONI ENGINEERING LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides engineering consultancy and EPC services for the energy sector, including safety and compliance, net‑zero transition support, and asset assurance and optimisation. Delivers engineering…
Sells to businesses in the energy sector, especially offshore oil and gas operators and asset owners needing EPC, safety, compliance, optimisation and net zero support for platforms, FPSOs and…
Financial Health
StrongStrong · Growing, Hiring · 23% CAGR over 5y
Location
FLEXLIFE LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides engineering services and technologies for offshore flexible pipes, risers and umbilicals, including design support, inspection, testing, monitoring, repair and life‑extension solutions, and…
Serves B2B clients in offshore energy, primarily oil and gas operating companies and offshore wind/renewables asset owners with flexible pipe, riser and umbilical assets globally.
Financial Health
StrongStrong · -2% CAGR over 5y
Location
MARINE TECHNICAL LIMITS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides engineering and technical services for FPSO and marine structures, including integrity management, on‑station repair, naval architecture, marine engineering, inspection and marine warranty…
Serves B2B clients in offshore oil and gas, especially FPSO operators, production companies and marine asset owners managing vessels and offshore structures in challenging environments.
Financial Health
HealthyHealthy · Growing · 1% CAGR over 4y
Location
ENVENTURE INTERNATIONAL (UK) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides installation and technical services for oil and gas well equipment, including solid expandable tubular systems such as liner hangers, patches and drilling tools used in drilling, well…
Serves B2B oil and gas operators, including exploration and production companies, independent producers and national oil companies working on onshore, offshore, unconventional, HPHT and mature field…
Financial Health
StableStable · Profitable · -6% CAGR over 2y
Location
AQUATERRA (GROUP) LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides asset integrity management, inspection and maintenance services for energy, marine and infrastructure assets. Offers non‑destructive testing, technical construction, rigging and lifting,…
Serves B2B asset owners, operators and contractors in oil and gas, offshore energy, marine and drilling, renewables, decommissioning, and industrial infrastructure sectors globally.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 3y
Location
TIS MANUFACTURING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures topside and subsea control and well intervention equipment for the energy sector, including umbilical reelers, wireline systems, pumps and pressure control units. Provides…
Serves B2B customers in offshore energy, oil and gas, subsea operations, well intervention, and renewables, including operators and service companies needing specialist control, intervention, rental,…
Financial Health
StableStable · -66% CAGR over 4y
Location
N-Ergise Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides engineering, construction and maintenance services for offshore and onshore energy projects. Activities include inspection, fabrication, electrical and instrumentation work, rope access,…
Sells to businesses in renewables, oil and gas, nuclear, construction and marine sectors, particularly operators, asset owners and project teams running offshore and onshore engineering, maintenance,…
Financial Health
StableStable · Hiring · 8% CAGR over 5y
Location
RIGQUIP DRILLING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides engineering, equipment supply, parts and maintenance services for oil and gas drilling rigs, including rig design, EPCC projects, inspection, repair and overhaul, field service, condition…
Serves oil and gas drilling contractors, rig operators and asset owners managing offshore and onshore drilling units worldwide, including teams responsible for rig equipment, maintenance,…
Financial Health
StableStable · 1% CAGR over 4y
Location
INTERVENTION GROUP LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides rental and sale of flowline, pressure control and hose equipment for the energy sector. Offers iron inventory management, storage and recertification, measurement calibration and inspection,…
Sells to businesses in the energy sector, especially oil and gas and emerging sustainable energy operators, needing rental equipment, inspection, calibration, iron management and offshore support…
Financial Health
WeakWeak · -68% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsActs as a holding company for a group that provides offshore support vessels and services, including accommodation and crane support, well testing and workover, transportation and installation, and…
Serves B2B customers in the offshore energy sector, including oil and gas operators and offshore wind farm developers/operators needing marine support across global projects.
Financial Health
HealthyHealthy
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides oilfield consultancy and technical services including production chemistry, produced water treatment, water injection analysis, process troubleshooting, asset integrity management, and…
Serves major oil and gas operators, especially teams responsible for offshore production, water injection, asset integrity, maintenance, process troubleshooting and production chemistry across global…
Financial Health
StableStable · 4% CAGR over 2y
Location
SENGS ENGINEERING SOLUTIONS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering design and consultancy, inspection, testing and flushing services for oil and gas equipment. Offers subsea tooling support, lifting equipment inspection, non‑destructive testing,…
Serves oil and gas and wider energy-sector operators, engineering contractors and asset owners managing subsea, topside and offshore assets, with some defence-sector customers via the wider group.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
GULFSTREAM SERVICES INTERNATIONAL UK LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides rental equipment and technical support for oil and gas operations, supplying tools and services used in drilling, production, and decommissioning projects for onshore and offshore energy…
Sells to B2B customers in the oil and gas sector, including operators and oilfield service companies managing offshore, onshore and decommissioning projects. Serves energy project teams needing…
Financial Health
DistressedDistressed · -70% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides oilfield engineering services including repair, refurbishment and rental of drilling and oilfield equipment for oil and gas industry clients such as OEMs, drilling contractors, rig owners,…
Serves B2B customers in the oil and gas sector, including original equipment manufacturers, drilling contractors, rig owners, oil companies and oilfield service companies.
Financial Health
StableStable · 0% CAGR over 2y
Location
THREE60 ENERGY LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering, consultancy and project services for the energy sector, including subsurface analysis, well engineering, subsea inspection and maintenance, and EPCC support. Also manufactures…
Serves B2B energy-sector clients, including major oilfield operators, offshore and onshore asset owners, new entrants, and companies in oil and gas, renewables, CCS, marine, defence and nuclear…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 2y
Location
TRAC ENERGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides rope access engineering services for the energy sector, including inspection, non-destructive testing, integrity management, maintenance and repair of offshore and onshore assets, as well as…
Serves B2B energy-sector asset owners and operators with offshore and onshore infrastructure, including organisations managing construction, operations, maintenance and decommissioning of industrial…
Financial Health
WeakWeak · -63% CAGR over 4y
Location
PATRIOT INTERNATIONAL LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides piping and pipeline services for the energy industry, including mechanical completion and commissioning, leak repair, hot tapping and pipeline intervention, decommissioning of pipework and…
Serves energy-sector and oil and gas operators, EPC contractors, and industrial maintenance or decommissioning teams managing pipework projects, including buyers needing specialist equipment rental…
Financial Health
StrongStrong · Hiring · 11% CAGR over 5y
Location
RAZOR OILTOOLS LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides intervention and plug and abandonment (P&A) tools and services for the oil and gas industry. Develops and supplies non‑explosive downhole tools for setting plugs and packers, punching or…
Serves oil and gas operators and well intervention/P&A service providers globally, including teams handling downhole operations where logistics, safety and hazardous-material constraints are key…
Financial Health
StrongStrong · Growing, Hiring · 29% CAGR over 3y
Location
ModuSpec Limited (previously known as Vysus Moduspec (UK) Limited)
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides inspection, verification and technical services for drilling rigs and well control equipment. Services include rig intake inspections, compliance audits, real-time monitoring, engineering…
Serves B2B clients in oil and gas and renewables, including operators, drilling contractors and service companies involved in drilling and wells projects such as carbon capture, geothermal and…
Financial Health
StableStable · -86% CAGR over 2y
Location
IKM Testing
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides testing, commissioning and maintenance services for onshore and offshore energy projects. Activities include valve testing and servicing, system flushing, fugitive emissions surveys,…
Serves B2B clients in the energy sector, including onshore and offshore oil and gas, petrochemical, power generation and wind energy operators, contractors and asset owners in the UK and…
Financial Health
WeakWeak · -10% CAGR over 1y
Location
ENERPRO GROUP LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides drilling rig upgrade and reactivation services for the oil and gas sector, including project management, engineering design modifications, construction support, repairs, and maintenance for…
Serves B2B customers in the oil and gas sector, particularly drilling rig owners, operators and asset managers needing support for rig reactivation, upgrades and project delivery globally.
Financial Health
StableStable · 0% CAGR over 2y
Location
The Impulse Group Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides offshore engineering services for the energy sector, specialising in flexible pipeline integrity management, subsea engineering, control systems and asset monitoring. Conducts engineering…
Serves offshore energy operators, asset owners and engineering teams in oil and gas, offshore wind, renewables and marine infrastructure worldwide, especially those managing subsea pipelines, ageing…
Financial Health
StableStable · Hiring · 45% CAGR over 2y
Location
Clover Tool Europe Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides equipment and technical services for the oil and gas industry, including BOP test tools, fluid mixing systems, pod refurbishment, fluid analysis, and inspection and testing of choke and kill…
Serves B2B customers in the energy sector, particularly offshore oil and gas operators, FPSO owners, drilling contractors and well-control teams working with subsea, riser and BOP equipment.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
Location
J&S SUBSEA LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering design, refurbishment, testing and operational support for subsea production control equipment. Supplies subsea connectivity systems, transformers, control manifolds, in-line…
Serves energy companies, subsea operators and engineering teams in the subsea production controls and marine renewables markets, including clients managing offshore equipment, spares and legacy…
Financial Health
StrongStrong · Hiring · 27% CAGR over 2y
Location
ADC Energy Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides inspection, audit and operational assurance services for offshore drilling rigs and marine vessels used in energy projects. Services include rig condition assessments, equipment and safety…
Serves B2B energy companies worldwide, especially operators and developers in oil and gas, offshore wind, geothermal and carbon capture that hire or build drilling rigs, specialist vessels and…
Financial Health
StableStable · -68% CAGR over 4y
Location
Allan Fraser Engineering Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides engineering and project management consultancy for the energy sector, specialising in drilling projects. Services include front-end engineering design, drilling engineering, well…
Serves B2B energy sector organisations, including oil and gas operators and project owners involved in drilling, well engineering, well examination and decommissioning projects.
Financial Health
StableStable · 0% CAGR over 1y
Location
SURECLEAN GROUP LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides specialist industrial cleaning and environmental response services for the energy industry, including high‑pressure equipment cleaning, tank and heat‑exchanger cleaning, cold cutting, oil…
Serves B2B clients in the global energy industry, including oil and gas operators, offshore installation owners, FPSO operators, and energy service companies requiring specialist industrial and…
Financial Health
StrongStrong · Hiring · 12% CAGR over 3y
Location
SUBSEA PRESSURE CONTROLS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsManufactures, sells, rents, repairs and refurbishes drilling and well control equipment for the oil and gas sector. Provides pressure testing, maintenance services, and mobile high‑pressure testing…
Serves B2B customers in the oil and gas, renewables and marine sectors worldwide, including operators and contractors involved in drilling, well control, subsea projects and decommissioning.
Financial Health
StrongStrong · Hiring · 16% CAGR over 3y
Location
Jemsar Engineering Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering maintenance and support services for the oil and gas industry, including heat exchanger servicing and repair, bundle pulling, on-site machining, technical bolting, pipework and…
Sells to oil and gas industry businesses needing engineering support for projects, maintenance, shutdowns and turnarounds, including large industrial operators and plant teams managing heat…
Financial Health
HealthyHealthy · -10% CAGR over 2y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops software and hardware systems for oil and gas drilling operations, including the SafeVision platform for monitoring well conditions and wellbore pressures. Provides engineering support,…
Serves B2B oil and gas operators, drilling contractors and well-control teams involved in planning, drilling and monitoring oil and gas wells, including offshore and deepwater projects.
Financial Health
StableStable · -79% CAGR over 2y
Location
A K WELL SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides technical consulting and support to oil and gas operators on drilling and completion fluids engineering, including fluids management, cementing, solids control, drilling waste handling,…
Serves independent oil companies needing support across drilling, completion, fluids, cementing, waste, environmental, HSE, laboratory, training and rig-site operations.
Financial Health
HealthyHealthy · -23% CAGR over 2y
Location
BPG Solutions
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides oil and gas consulting and technical services including subsurface reservoir evaluation, field development planning, drilling and completions design, production optimisation, facilities…
Serves B2B customers in the oil and gas sector, including operators, asset owners, development teams and investors involved in exploration, field development, production, asset transactions and…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
A.S MOSLEY & COMPANY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides engineering analysis and design consultancy for offshore oil and gas projects, including global riser analysis, wellhead and conductor assessments, finite element modelling, and structural…
Serves B2B clients in the offshore energy sector, especially oil and gas operators, drilling contractors and subsea engineering teams needing riser, wellhead, conductor and structural analysis. Also…
Financial Health
StableStable · 1% CAGR over 4y
Location
AISUS Offshore Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides remote inspection and non-destructive testing services for offshore and energy infrastructure, including internal and external inspection of caissons, risers, pipework and ducts. Uses…
Serves B2B clients in energy and marine sectors, including offshore platform operators, renewables developers, FPSO owners, drilling companies, marine operators and decommissioning contractors…
Financial Health
StrongStrong · Growing, Hiring · 23% CAGR over 4y
Location
ROCKSALT SUBSEA LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides commercial subsea diving and remotely operated vehicle (ROV) services for offshore and marine projects. Conducts underwater inspection, repair and maintenance, construction and installation,…
Serves B2B operators, contractors and project teams in oil and gas, renewable energy and nearshore infrastructure, across onshore and offshore environments in the UK and internationally.
Financial Health
HealthyHealthy · -38% CAGR over 5y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides oilfield engineering services including repair, maintenance, and rental of oilfield equipment for the oil and gas industry, serving OEMs, drilling contractors, rig owners, oil companies, and…
Serves B2B customers in the oil and gas industry, including original equipment manufacturers, drilling contractors, rig owners, oil companies and oilfield service companies.
Financial Health
StableStable
Location
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How UK oilfield services companies work and how to sell to them
What they do
Most oilfield services revenue is earned through contracted labour, equipment hire, call-out work, engineering studies and project delivery rather than repeatable product licensing. Suppliers may price by day rate, mobilisation charge, milestone, managed-service retainer or framework schedule, with extras for vessel time, specialist tools, certification and standby cover. A small inspection job can look transactional, while well intervention, pipeline repair or decommissioning support may run as a multi-party work scope with formal change control. Gross margin is shaped by crew utilisation, weather windows, equipment availability, insurance, subcontractor cost and the ability to document work to operator and regulator standards.
Who they sell to
Customers are typically upstream operators, licence holders, engineering primes and offshore asset managers, with some demand from infrastructure owners in adjacent energy work. Buying groups usually include operations directors, wells managers, asset-integrity leads, engineering managers, health, safety and environment teams, commercial teams and procurement. Lower-risk work can be sourced through preferred-supplier lists or direct quotation, but safety-critical and offshore scopes tend to move through tenders, technical qualification and framework agreements. Sales cycles often depend on shutdown calendars, vessel availability and consent timing, so a live opportunity may move slowly until a maintenance window, incident response or bid deadline creates urgency.
What they buy
Most oilfield services firms tend to spend on systems and services that keep field delivery auditable and crews chargeable. Common needs include ERP, finance, procurement, tender management, field-service scheduling, asset tracking, maintenance planning, document control, competence management, training records, safety case management, incident reporting, emissions reporting and quality assurance. Larger suppliers also buy cyber security, cloud hosting, satellite connectivity, data management, remote monitoring, rugged devices, specialist insurance, legal support, tax advice, payroll, recruitment and offshore travel logistics. Commercial teams may need CRM and bid-writing support, but operational buyers usually care more about evidence capture, mobilisation planning and controlled handovers than generic sales productivity.
Why and how to sell to them
Oilfield services buyers tend to evaluate vendors when utilisation, compliance evidence or mobilisation friction becomes visible to management. Triggers include framework renewal, a new offshore work scope, decommissioning activity, audit findings, flaring or venting scrutiny, safety incidents, equipment downtime, crew shortages, leadership change or a move into adjacent offshore energy work. Outbound messages usually land better when they attach to a specific operational cost: fewer missed certifications, shorter tender response cycles, cleaner handover packs, lower rework, better crew allocation or faster evidence gathering for operator audits. Generic productivity claims are less persuasive than proof that a supplier can protect uptime, margin and consent-related documentation without adding admin burden offshore.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
Sources
- Economy & People Report 2024
- Capital investment in offshore energy could rise by over 50%, from £13 billion last year to more than £20 billion by the early 2030s.
- Offshore energy sector employment is estimated to increase by nearly 50% to 225,000 jobs by 2030.
- The offshore energy sector currently supports over 150,000 jobs directly or indirectly.
- Almost 80% of current offshore energy sector jobs are in oil and gas.
- The oil and gas industry contributes approximately £25 billion to the UK economy and has paid £450 billion in production taxes over the past 50 years.
- Reserves and Resources as at end 2024
- Proven and probable UK oil and gas reserves were estimated at 2.9billion boe at the end of 2024.
- UK contingent resources stood at 6.2 billion boe at the end of 2024.
- UK prospective resources were estimated at 4.6 billion boe at the end of 2024.
- Prospective resources were up by 31% from the end of 2023.
- A total of 47.7 billion boe of oil and gas had been produced from the UKCS by the end of 2024.
- Record-high gas production in 2024
- Norway sold 124 billion standard cubic metres (Sm3) of gas in 2024.
- Norway sold 122.8 billion Sm3 of gas in 2022, for comparison with 2024's 124 billion Sm3.
- Overall Norwegian continental shelf production reached about 240 million standard cubic metres of oil equivalent in 2024.
- The 2024 production total was stated as 1510 million barrels of oil equivalent.
- Norway's 2024 overall production was the highest level since 2009.
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Frequently asked questions
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