Upstream Energy Companies in the UK: 471 Active Firms (2026)
Upstream energy companies find, develop and produce oil and gas resources, with UK operators spanning offshore and onshore assets.
Commercial decision-making sits mainly with subsurface, drilling, production-operations and asset-commercial teams, with procurement and safety functions drawn in before field work reaches sanction. The customer and counterparty base is not a broad SMB market: it tends to involve wholesale energy buyers, joint-venture partners, infrastructure owners, land or licence stakeholders, and specialist contractors. Engagements are usually asset-level rather than transactional, with work scoped around appraisal, drilling support, field operations, reservoir management or production optimisation. Small operators may still carry complex approval and technical workflows, while mid-market producers often need external engineering, finance and commodity-risk support around a narrow asset base.
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There are 471 actively trading upstream energy companies in the UK, so the investable and supplier-facing universe is relatively narrow compared with broader energy services categories. Reported employment totals 1,048 people, which points to a market with many lean operators and outsourced technical capacity. Scale is uneven: 6 firms report turnover above £5M, while 50 were incorporated since 2022. That shape matters for researchers because a short list of revenue-bearing operators can sit alongside early-stage licence holders, appraisal vehicles and asset developers that may have little public commercial history.
Licensing and consent processes make timing as important as geology. Offshore and onshore operators have to manage approval pathways, environmental assessment, safety requirements and decommissioning obligations before production economics can be judged. Market structure is also shaped by asset ownership and farm-in behaviour: smaller businesses may hold or progress a licence, then bring in partners for drilling, infrastructure access or later-life operations. Commodity-price exposure sits behind most commercial decisions, but policy scrutiny over domestic production, emissions and end-of-life liabilities can decide whether a marginal asset remains financeable.
Capital access appears likely to separate the cohort further. Operators with producing assets and clearer decommissioning plans tend to have more options than appraisal-stage businesses, especially where drilling windows, infrastructure access and commodity hedging have to be negotiated together. Consolidation may continue around late-life assets and specialist operating teams, while early-commercial firms remain exposed to long approval cycles and partner dependency. For buyers and analysts, the useful distinction is less oil versus gas than the maturity of the asset, the burden of future liabilities, and the operator's ability to fund work before production revenue arrives.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
Active director count is the full Companies House board, so it can be higher than the number of names listed — we leave out nominee and formation-agent directors, who aren’t worth contacting. It’s blank for the small number of companies whose officers we haven’t fetched yet.
You’re charged per business, not per row. Where a business trades through several registered companies you get every one, and the Group Primary column marks one row per business — filter to those and the count matches your invoice. Rows sharing a website are not automatically one business: franchises and multi-site operators each count separately, and where names don’t prove a relationship we count them apart rather than guess.
471
Active firms
2026
6
Above £5M
Reported revenue
50
Newer firms
Incorporated since 2022
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Key facts
About 1% of the trading cohort reports turnover above £5M (6 of 471 firms) — the rest sits below that revenue band.
10% of the cohort was incorporated since 2022 (50 firms), so a sizeable share is in its first few filing cycles.
Upstream energy businesses sit at the front end of the UK oil and gas chain, before transport, trading or retail supply.
Exploration and production operators span offshore and onshore assets, with buyer needs tied to field operations rather than household-scale supply.
Commercial exposure tends to depend on reservoir performance, production volumes and commodity-price cycles.
Qualification work usually separates asset-holding entities from operating businesses because buying motions and partner needs differ.
Top UK Upstream Energy companies
- Ithaca Energy01546623
- Ithaca Energy05929104
- Ithaca EnergySC272009
- Ithaca Energy09103084
Explores for, develops and produces oil and natural gas from offshore fields. Operates and manages production assets and infrastructure, working with partners to extract hydrocarbons and manage…
Serves wholesale energy market participants and B2B stakeholders, including joint-venture partners, suppliers and investors focused on UK Continental Shelf oil and gas assets.
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- Anasuria Operating Company12554647
- Anasuria Operating Company09696268
Financial sub-scores
Computed from 5 filingsOperates offshore oil and gas assets in the Anasuria Cluster in the North Sea, managing exploration, field development and production, including operation of the Anasuria FPSO and associated offshore…
Financial Health
HealthyHealthy · Hiring · 39% CAGR over 4y
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Explores, develops and produces oil and gas from offshore assets, primarily in the UK North Sea and Malaysia. Operates upstream fields, pipelines and the Sullom Voe Terminal, and undertakes asset…
Serves B2B energy-sector customers, including oil and gas operators connected to upstream assets, terminal infrastructure and decommissioning, mainly in the UK and Malaysia.
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Explores for and produces oil and gas, focusing on maturing or underdeveloped fields. Operates and maintains offshore production assets and terminals, extends asset life, and manages decommissioning…
Serves B2B energy-sector customers, including oil and gas operators needing UK terminal, pipeline and decommissioning services, alongside wholesale buyers of upstream oil and gas production.
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- Dana Petroleum14134199
- Dana Petroleum (E&P)02294746
- Dana Petroleum03456891
Explores for, develops and produces oil and natural gas. Operates and holds interests in offshore production licences and fields, managing exploration, field development and hydrocarbon extraction…
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- ONE-Dyas03531783
Explores for and produces oil and natural gas. Acquires, develops and operates upstream exploration and production assets, managing operated and non-operated fields and offshore projects, including…
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Explores for and produces oil and gas, operating upstream assets and related infrastructure in the UK and Malaysia. Manages mature fields, asset life extension projects, decommissioning activities,…
Sells primarily to B2B energy-sector counterparties, including oil and gas operators needing terminal services and buyers/offtakers of upstream production, with operations focused on the UK and…
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Operates oil and gas upstream assets, producing hydrocarbons from mature fields and managing associated infrastructure. Also undertakes asset life‑extension, decommissioning projects, and development…
Serves B2B energy-sector customers, including oil and gas operators needing upstream, midstream, terminal and decommissioning-related services, alongside commodity buyers in UK and Malaysia energy…
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Explores for and produces oil and gas from offshore fields, operating and developing upstream assets in the UK and Malaysia. Manages production infrastructure, asset life‑extension projects,…
Serves B2B customers in the energy sector, including oil and gas operators, infrastructure users and commodity buyers linked to UK and Malaysia upstream activity.
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Engages in oil and gas exploration, development and production, focusing on maturing and underdeveloped fields. Operates upstream assets, terminals and pipeline infrastructure, and undertakes asset…
Serves B2B energy-sector customers, including oil and gas operators needing UK/Malaysia upstream, midstream terminal and decommissioning services, plus counterparties in new energy and…
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Explores for, develops and produces onshore oil and natural gas assets in the UK. Operates the Saltfleetby gas field and holds interests in the Brockham, Lidsey and Balcombe oil fields, managing…
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- Cheiron13207893
Financial sub-scores
Computed from 2 filingsIndependent oil and gas exploration and production company engaged in upstream activities including near‑field exploration, field development, and operation of mature hydrocarbon fields. Focuses on…
Financial Health
StableStable
Location
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- Capricorn EnergySC301223
Explores for, develops and produces oil and natural gas. Operates and manages onshore hydrocarbon development and production assets, generating revenue from crude oil and gas sales and overseeing…
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- Nobel Upstream09856429
- Nobel Upstream08891699
Independent oil and gas exploration and production company investing in and developing upstream assets. Participates in joint ventures and production sharing agreements, drills and operates wells,…
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Explores for, develops and produces oil and natural gas resources through interests in offshore fields and energy infrastructure, including participation in a consortium operating multiple producing…
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Explores for, develops and produces crude oil and gas from operated and partner assets, managing field operations and related infrastructure while implementing emissions reduction measures such as…
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Explores for, develops and produces oil and gas assets as part of an independent energy group. Involved in operating and managing offshore fields, extending asset life, and supporting decommissioning…
Serves B2B energy-sector customers, including oil and gas operators and partners needing upstream, midstream and decommissioning support, plus investors and supply-chain counterparties linked to UK…
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Operates and develops oil and gas production assets, focusing on mature and underdeveloped fields. Manages upstream operations, infrastructure and decommissioning projects, operates oil terminals,…
Serves B2B customers in the energy sector, particularly oil and gas operators using UK/North Sea terminal and midstream infrastructure, with operations focused in the UK and Malaysia.
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Acquires, operates and redevelops mid-life oil and gas assets. Manages development concessions, producing fields and offshore platforms, extracting crude oil and gas and working to extend field life…
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- United Oil & Gas10358067
- United Oil & Gas10164996
Explores for and develops oil and gas assets. Holds and manages an onshore oil development project at Waddock Cross in the UK and an exploration licence in Jamaica, and pursues acquisition of…
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- Kistos12859749
- Kistos14490676
Engages in oil and gas exploration and production and midstream energy infrastructure. Operates offshore fields with processing, storage and offloading assets, and manages underground natural gas…
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- Woodside EnergyFC040858
- Woodside Energy10245673
- Woodside Energy04232374
Financial sub-scores
Computed from 2 filingsExplores, develops and operates oil and gas fields and liquefied natural gas (LNG) projects; produces and markets natural gas, LNG and petroleum; develops energy infrastructure and lower‑carbon…
Serves wholesale energy markets, industrial customers and utilities through global oil, gas, LNG and new energy supply, while also engaging suppliers, investors and shareholders as key stakeholder…
Financial Health
WeakWeak · -14% CAGR over 1y
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Provides upstream oil and gas exploration and development activities, focusing on offshore assets including the North Sea and Comoros. Acquires hydrocarbon interests, manages production sharing…
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Financial sub-scores
Computed from 4 filingsExplores and appraises oil and gas prospects in the UK Continental Shelf and nearby basins. Uses seismic interpretation, basin modelling, and geological analysis to identify hydrocarbon opportunities…
Targets institutional and industry investors, farm-in partners and energy-sector operators interested in North Sea exploration and appraisal opportunities across the UK Continental Shelf.
Financial Health
StableStable · Hiring · 19% CAGR over 4y
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- Perenco01789505
- Perenco07517072
- Perenco02215004
Explores, develops and produces oil and natural gas, managing hydrocarbon projects across their lifecycle from exploration and field development to production optimisation and decommissioning, with a…
Serves governments and national energy stakeholders in oil- and gas-producing countries, particularly those managing mature, marginal or stranded hydrocarbon resources.
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Explores and produces oil and gas. Operates and develops upstream assets including horizontal shale wells, manages reserves and daily production, and invests in development and exploratory acreage…
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Financial sub-scores
Computed from 5 filingsExplores and develops offshore natural gas resources. Holds and manages interests in gas licences, including partially developed fields and exploration prospects, and undertakes appraisal,…
Financial Health
StableStable · -47% CAGR over 5y
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Invests in and develops oil and gas exploration projects on North Sea licences, holding interests in offshore prospects. Conducts subsurface evaluation, drilling partnerships, and resource appraisal…
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Explores for and produces oil and natural gas, develops offshore energy projects, and supplies gas to energy markets. Also invests in renewable power such as offshore wind and develops low‑carbon…
Serves wholesale energy buyers, utilities, industrial customers and public-sector stakeholders across Europe and international markets, with investor and shareholder audiences also addressed.
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Computed from 5 filingsEngages in upstream oil and gas exploration and development. Holds interests in natural gas licences and energy projects, undertaking drilling, appraisal and production activities and managing…
Financial Health
StableStable
Location
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Explores, develops and produces oil and natural gas resources. Manages upstream energy assets including offshore fields, participates in drilling and production operations, and supplies hydrocarbons…
Serves B2B customers across chemicals, polymers, oil and gas, automotive, and wider industrial manufacturing markets, including buyers sourcing materials and energy-related inputs.
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- Birchcliff Energy03694622
Financial sub-scores
Computed from 3 filingsExplores for, develops and produces natural gas, light oil, condensate and natural gas liquids. Operates gas processing facilities and related infrastructure, including the Pouce Coupe Gas Plant,…
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 2y
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Operates and develops offshore oil and gas assets, focusing on production, field development, and asset consolidation through acquisitions and mergers. Manages project portfolios and oversees…
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Computed from 3 filingsConducts oil and gas exploration and production activities, including drilling wells, operating production facilities, and developing petroleum acreage. Also provides services such as bolt tensioning…
Financial Health
StrongStrong · Hiring · 94% CAGR over 2y
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Explores for and produces crude oil through the development and operation of oil fields. Invests in managing and extending the productive life of existing petroleum assets and supports related…
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- BowlevenSC176693
Engages in oil and gas exploration and development, managing upstream energy assets and project interests. Activities include oversight of the Etinde hydrocarbon project and related operational,…
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- Kosmos Energy,FC031463
Engages in exploration and development of offshore natural gas resources, participating in drilling and appraisal of gas fields and in the Greater Tortue Ahmeyim liquefied natural gas project through…
Serves B2B energy markets, LNG and oil buyers, joint-venture partners, host governments and public-market investors involved in offshore oil and gas projects in West Africa and the Gulf of America.
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Computed from 4 filingsEngages in development and operation of shale gas and conventional gas assets, including exploration, drilling and production activities, and management of associated energy infrastructure and rights.
Financial Health
WeakWeak
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Operates as a holding company for oil and gas exploration and production activities, managing investments in upstream energy assets and related infrastructure as part of the INEOS Energy business.
Serves business customers across chemicals, polymers, and oil and gas markets, including industrial manufacturers and energy-sector buyers. Also sells to consumers through its automotive business.…
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Produces petrochemicals, polymers and specialty chemicals, and operates oil and gas exploration, production and infrastructure businesses. Supplies industrial materials used in plastics, fuels,…
Serves B2B customers in chemicals, polymers, oil and gas, automotive supply chains, and other industrial markets needing petrochemical products and materials worldwide.
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Produces chemicals and polymers, and operates oil and gas exploration, production and trading activities. Manufactures industrial chemical products and materials used in plastics, fuels and other…
Serves B2B industrial customers in chemicals, polymers, oil and gas, automotive and manufacturing markets, including businesses sourcing petrochemicals, plastics, energy products and related…
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- Bluewater (floating Production)03291793
- Bluewater Energy Services03492253
- Bluewater Energy Services03253206
Financial sub-scores
Computed from 5 filingsDesigns, develops, leases and operates offshore tanker-based production and storage systems for the oil and gas sector, including FPSOs and mooring systems. Provides single point mooring, loading and…
Serves energy companies and offshore project operators in oil and gas, LNG, and renewable energy markets, including customers needing floating production, storage, mooring, and offshore transfer…
Financial Health
StableStable
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Develops and manages energy infrastructure projects linked to the Sullom Voe Terminal, including oil and gas processing services and initiatives for decarbonisation such as carbon capture and storage…
Serves B2B energy-sector customers, including oil and gas operators using terminal infrastructure and partners pursuing new energy and decarbonisation projects around UK North Sea assets.
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Computed from 5 filingsManages and develops conventional oil and gas exploration and near‑term field development projects in Europe. Acts as a project vehicle for privately funded investments, supporting exploration,…
Targets private equity investors and oil and gas exploration partners involved in conventional European and African assets, including near-term field development and exploration projects.
Financial Health
WeakWeak
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- Amplus EnergySC534915
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Computed from 4 filingsProvides oil and gas field development services, including engineering studies, FPSO deployment and operations, early production systems, and modular Versatile Production Units (VPUs). Also supports…
Targets B2B customers in the upstream energy sector: oil majors, smaller independent oil companies, field operators and project developers involved in offshore oil and gas fields and carbon capture…
Financial Health
StableStable · 0% CAGR over 3y
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Engages in the exploration, development and production of oil and natural gas assets as part of an integrated chemicals and energy group. Activities include managing upstream energy investments and…
Serves industrial B2B customers in chemicals, polymers, and oil and gas, including manufacturers and automotive-related markets, with customers across multiple countries.
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Produces petrochemicals, polymers and specialty chemical products for industrial markets, and operates oil and gas exploration, production and trading activities. Also develops automotive vehicles…
Serves industrial B2B customers across chemicals, polymers, oil and gas, and related manufacturing markets, with additional consumer-facing automotive buyers through its Grenadier business.
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Operates and develops energy infrastructure associated with the Sullom Voe Terminal, providing oil and gas handling, processing and related services, and pursuing projects focused on energy…
Serves B2B customers: oil and gas operators needing terminal and midstream services, and energy-sector partners involved in new energy and decarbonisation opportunities.
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- TotalEnergies09849276
Produces and markets energy including oil, biofuels, natural gas, renewable power and electricity. Activities include exploration and production of oil and gas, refining and petrochemicals, energy…
Serves a global mix of consumers, businesses, industrial users, investors and public-sector stakeholders across energy, transport and infrastructure markets.
Financial Health
N/AN/A
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Financial sub-scores
Computed from 5 filingsExplores, develops and produces oil and gas through a portfolio of upstream petroleum assets. Conducts exploration, field development and production operations, and manages reserves and related…
Financial Health
StableStable · -68% CAGR over 4y
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How UK Upstream Energy companies work and how to sell to them
What they do
Upstream energy companies make money when hydrocarbons are produced and sold, when asset interests are traded, or when a licence position is farmed down to another participant in return for capital, carry or future revenue exposure. A typical commercial unit is the asset or work programme, not a seat licence or short service job. Pricing is therefore tied to commodity prices, joint-venture cost shares, reserve assumptions and the risk profile of drilling or production work. Earlier-stage businesses may have little recurring revenue until appraisal or production advances, while producers tend to manage a mix of offtake, hedging, infrastructure access and contractor spend.
Who they sell to
Most upstream firms sell into concentrated commercial networks rather than broad customer lists. Produced volumes usually go to wholesale energy buyers or through infrastructure-linked offtake arrangements, while asset transactions are negotiated with operators, financial partners and licence stakeholders. Decision makers are typically asset directors, commercial leads, CFOs, technical authorities and procurement teams, with safety and environmental reviewers involved before field activity. Sales cycles for their own counterparties can be long because technical diligence, partner approval, credit support and regulatory consent need to line up. Procurement is usually direct and relationship-led, with formal tendering used for field work and larger outsourced scopes.
What they buy
Most upstream energy firms tend to spend on specialist technical services before general office systems. Common buying categories include seismic interpretation, reservoir modelling, drilling engineering, production optimisation, well integrity, metering, emissions measurement, environmental assessment and decommissioning planning. They also buy less sector-specific tools for finance, contract management, document control, procurement, cyber security, HR and board reporting. Lean operators often outsource geology, engineering, legal, tax, insurance and investor communications rather than building full internal teams. Where assets are offshore or operationally exposed, vendors that can work within safety, audit and change-control processes usually have an easier route into procurement.
Why and how to sell to them
Buying intent tends to rise around licence changes, farm-in talks, drilling preparation, production decline, refinancing, leadership change or a move from appraisal into field operations. The common pain is coordination: technical teams need decisions that satisfy partners, lenders, safety reviewers and commercial managers before capital is committed. Sellers usually get further by anchoring outreach to an asset event or cost-risk problem, rather than a generic efficiency claim. Useful angles include shortening technical review cycles, improving cost visibility, reducing downtime exposure, evidencing compliance, managing contractor performance or preparing for end-of-life liabilities. Proof points should be specific to operating environments and approval workflows.
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.
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