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Civil Engineering Companies in Southampton: 562 Active Firms (2026)
Civil engineering companies in Southampton design, build and maintain transport, utilities and other infrastructure across the Solent economy.
Buying centres tend to sit with infrastructure procurement teams, asset managers, engineering leads and commercial directors rather than generalist facilities buyers. Southampton contractors in this cohort usually sell project packages to public-sector bodies, regulated utilities, ports-adjacent customers and private infrastructure owners, with health-and-safety competence and evidence of past delivery carrying weight in selection. Engagements are typically tendered or framework-led, with priced works covering enabling, civils packages, maintenance and project management. The better-fit suppliers look like mid-market operators with site delivery, engineering, commercial and project-management capacity, rather than micro-subcontractors serving only occasional local works.
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Southampton has 562 active trading civil engineering companies, a broad contractor base for a city-region market tied to the Solent economy. Only 16 companies sit above £5M turnover, so the revenue-ranked list is likely to have a long tail of smaller contractors beneath a thinner set of mid-market operators. Reported employment totals 695 people, which points to a visible workforce concentrated in firms that disclose headcount and a market where subcontracting, temporary labour and specialist packages may matter alongside direct employees.
Civil engineering delivery sits inside the UK construction health-and-safety regime. The Health and Safety Executive places project notification, construction work, legal requirements and duty-holder responsibilities within the CDM Regulations, with clients, designers, principal contractors, contractors and workers all carrying defined roles. The Civil Engineering Contractors Association frames the contractor base around critical infrastructure networks in transport, energy, water, waste and communications. ONS construction statistics also point to rising new work and orders in Great Britain, with private infrastructure among the contributors, so local competition is shaped by safety competence, framework access and utility-supply-chain credibility.
Revenue-scale contractors appear relatively scarce beside a long tail of local operators, so buyers are likely to keep separating framework-capable firms from smaller civils specialists. Margin pressure tends to come from labour availability, plant utilisation, risk transfer and the timing of public-sector and utility programmes. Newer entrants may find work through specialist packages or maintenance, but moving into prime-contractor roles usually requires evidence on safety systems, commercial controls and delivery history. Consolidation appears more likely around capability gaps and succession than around a simple land-grab for local market share.
562
Active firms
2026
16
Above £5M
annual revenue
139
Incorporated since 2022
newer firms
Key facts
About 2% of the trading cohort reports turnover above £5M (16 of 562 firms) — the rest sits below that revenue band.
24% of the cohort was incorporated since 2022 (139 firms), so a sizeable share is in its first few filing cycles.
Civil engineering work sits under the Construction (Design and Management) Regulations 2015, which set duties for clients, designers, principal contractors, contractors and workers.
ONS construction new work in Great Britain increased by 1.4% in 2024, while new orders rose by 5.6%.
Private infrastructure was among the main contributors to construction new orders in 2024, increasing by 15.4%.
ONS counted 370,770 VAT and PAYE-registered construction firms in Quarter 3 2024, up 1.7% on 2023.
OECD material for the United Kingdom’s 2024 Economic Survey describes investment as low by international comparison.
Top Southampton Civil Engineering companies
P. T. CONTRACTORS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building and civil engineering services, delivering construction and project management for infrastructure projects including high‑voltage substations, fuel storage facilities, and utility…
Serves private developers, businesses and community partners, particularly energy and utility infrastructure clients commissioning substations, fuel farms and other construction-led infrastructure…
Financial Health
StableStable · -67% CAGR over 4y
Location
CHANGEREGARD LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides civil engineering and groundworks contracting services, including earthworks, foundations, reinforced concrete frames and basements, drainage and sewer installation, roads and surfacing,…
Serves national housing developers and property development clients across the south coast, including Hampshire, Dorset, Wiltshire, Berkshire, Surrey and Sussex.
Financial Health
HealthyHealthy · -68% CAGR over 4y
Location
STRANDHILL PROPERTY DEVELOPMENT LIMITED
Trajectory
5y · 2021–NowProvides groundwork and civil engineering services for residential housing developments, including site clearance, bulk excavation, road construction, drainage installation, foundations, retaining…
Serves national speculative housing developers and housebuilders delivering residential sites of 2-100 units across Hampshire, Surrey, West Sussex, Berkshire and Buckinghamshire.
Financial Health
Insufficient historyInsufficient history
Location
WB CIVIL & MECHANICAL LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides pipeline engineering and construction services for oil and gas infrastructure, including pipework fabrication, pipeline diversion design, installation and repair, composite pipeline repairs,…
Serves B2B and public-sector buyers in pipeline infrastructure, including oil and gas pipeline operators, energy asset owners, utilities, civil engineering contractors and highway authorities.
Financial Health
WeakWeak · -2% CAGR over 4y
Location
Ryan Contracting UK Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Growing · 0% CAGR over 5y
Location
RP WINDOWS & BUILDING SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -16% CAGR over 4y
Location
SLH Contractors Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable · 0% CAGR over 2y
Location
MEB ENGINEERING SERVICES LIMITED
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
STRANDHILL, CIVIL ENGINEERING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides groundwork and civil engineering services for residential housing developments, including site clearance, bulk excavation, drainage systems, road construction, foundations, retaining walls,…
Serves national speculative housing developers and residential construction clients on small to medium housing sites, primarily across Hampshire, Surrey, West Sussex, Berkshire and Buckinghamshire.
Financial Health
HealthyHealthy · Hiring · 2% CAGR over 5y
Location
Solent Streetworks Consultants Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 5y
Location
WN CONSTRUCTION LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
Jane Field Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
JARVIS MECHANICAL ENGINEERING LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
Solent Contracting Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
C&D Plant & Construction Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides construction and civil engineering services including groundworks, drainage installation, general building works, demolition and strip‑out. Also offers plant hire and undertakes housing and…
Serves construction clients, property developers and housing development organisations needing contractors for groundworks, drainage, civil engineering, demolition, plant hire and general…
Financial Health
WeakWeak · -10% CAGR over 4y
Location
SMITH & WEBB LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides borehole drilling and percussion boring services for water supply, soakaways, pollution monitoring and site investigation. Installs and services borehole pumps and submersible pumping…
Serves civil engineers, contractors, local authorities, consulting engineers, architects, agricultural and industrial sites, and residential customers needing borehole, water supply and pumping work.
Financial Health
WeakWeak · Hiring · 2% CAGR over 4y
Location
Romeva Engineering Services Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
Aj Holdings (dk) Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable · 0% CAGR over 2y
Location
HUTCHINSON SUSTAINABILITY SOLUTIONS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -68% CAGR over 4y
Location
Teepee Engineering Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
W&s Mechanical Services Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed · 0% CAGR over 3y
Location
Oliver Cutts Estates Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides civil engineering and coastal defence contracting services, including groundworks, drainage, piling, reinforced concrete structures, river and shoreline protection works, and infrastructure…
Serves public-sector bodies, framework partners and commercial infrastructure owners in Hampshire and Dorset, including airports, ports, harbours, marinas, transport hubs, waste facilities and…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Earlcoate Properties Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides civil engineering and coastal defence construction services, including groundworks, drainage, piling, reinforced concrete structures, seawalls, dredging and river works. Also supplies plant…
Serves public and private-sector infrastructure clients, including local authorities, airports, ports, harbours, marinas, transport hubs, waste facilities and environmental or flood management bodies…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
AJR CIVIL & MARINE LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides groundworks and civil engineering services, including land excavation, drainage and irrigation works, road construction, building foundations, underpinning, and utility installations. Also…
Serves local authorities, parish councils, utility companies, marina operators and commercial or domestic clients needing civil engineering and groundworks support, with emphasis on marina…
Financial Health
DistressedDistressed · -21% CAGR over 2y
Location
AVON CONSTRUCTION LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides civil engineering and building contracting services, including design-and-build and subcontract work. Undertakes projects such as footbridges, rail and water infrastructure, coastal works,…
Serves public-sector and commercial infrastructure clients, main contractors and consultants commissioning bridge, rail, water, coastal, SANG, landscaping, building and minor works projects.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 2y
Location
NELSON PLANT HIRE LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides plant and skip hire alongside construction and waste services, including demolition, groundworks, civil engineering, bulk earthworks, waste recycling and landfill operations, grab hire,…
Serves construction contractors, developers, civil engineering firms and project owners, plus local households and tradespeople seeking skip hire in the Andover and Hampshire area.
Financial Health
WeakWeak · 0% CAGR over 3y
Location
Integral Hire
Provides engineering, procurement and construction services for energy, water, nuclear and infrastructure projects, including process and civil design, MEICA engineering, automation and control…
Serves B2B and public-sector clients in the UK and overseas, including water utilities, energy operators, process industries, nuclear and defence organisations procuring engineering and construction…
Location
SIENNA CONSTRUCTION LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides construction and civil engineering services, including building construction, refurbishment and infrastructure works. Undertakes power and utilities projects such as cable laying,…
Serves B2B and public-sector clients, including utilities companies, schools, offices, leisure facilities, housing providers, healthcare establishments and aviation-sector organisations.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 3y
Location
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides rail engineering and infrastructure services, delivering turnkey railway projects with a focus on signalling and power systems. Also undertakes electrification and plant works, civil…
Serves B2B and public-sector rail infrastructure clients, including Network Rail and delivery partners, needing signalling, power, track, civils, electrification and asset management support for…
Financial Health
DistressedDistressed
Location
Trant Engineering
Provides engineering, procurement and construction services, including process, mechanical, electrical and civil design, automation and control systems, offsite manufacture and assembly, and…
Serves B2B and public-sector clients delivering major engineering and infrastructure projects, particularly in energy, process and water, nuclear and defence sectors, in the UK and overseas.
Location
R&W Langley Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides civil engineering and construction services including S278 infrastructure works, site clearance, pavement and carriageway construction, pipeline and deep drainage installation, earthworks,…
Serves property developers, main contractors, local authorities and statutory undertakers involved in infrastructure, housing and public-realm development projects.
Financial Health
StableStable · -13% CAGR over 4y
Location
ACS (Construction Services) Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides civil engineering and construction services including industrial and commercial building projects, warehouse construction, groundworks and earthworks, and infrastructure works for energy and…
Serves UK businesses and infrastructure clients, including industrial and logistics operators, warehouse developers, major energy and utilities providers, renewables projects, commercial/retail…
Financial Health
DistressedDistressed
Location
ALLROUND PLANT LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides groundworks and civil engineering services for construction projects, including site clearance, bulk excavation, earthworks, foundations and substructures, deep drainage, road and car park…
Serves housebuilders, housing associations, commercial developers and construction clients needing groundworks and civil engineering support, from one-off small projects to large residential and…
Financial Health
StrongStrong · Profitable
Location
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides rail engineering and infrastructure services, delivering turnkey railway projects focused on signalling and power systems. Activities include electrification and plant works, civil…
Serves UK rail infrastructure clients, including Network Rail, route managers and rail project delivery partners involved in signalling, power, civils, track and electrification programmes.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
Steel Piling Solutions Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides steel sheet piling installation and related contracting services for construction and marine projects. Services include land and marine piling, silent piling, Movax piling installation and…
Serves construction firms, developers, civil engineering contractors and public-sector bodies across the UK, including clients involved in marine, flood-defence, railway, residential and commercial…
Financial Health
StableStable · -5% CAGR over 2y
Location
Pondaqs Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
TEMPORARY SITE MANAGEMENT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides civil engineering, groundworks and building services for public and private sector projects. Delivers construction and design-and-build works, building maintenance, installation and…
Serves public and private sector clients, including government bodies, NHS organisations, local authorities, utilities, facilities management providers, security services groups and construction…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
Trant Engineering
Provides engineering, procurement and construction services, including project management, process, mechanical, electrical and civil design, automation and control systems, offsite manufacturing, and…
Sells to B2B and public sector clients delivering major engineering and infrastructure projects, particularly in energy, process and water, nuclear and defence, in the UK and overseas.
Location
Trajectory
1y · 2025–NowProvides engineering, procurement and construction services, including process, mechanical, electrical, instrumentation and civil design. Delivers automation and control systems, offsite…
Serves UK and overseas B2B and public-sector infrastructure clients, including water utilities, energy operators, nuclear organisations, defence bodies and industrial project owners managing capital…
Financial Health
Insufficient historyInsufficient history
Location
Sgs Surveys Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · Hiring · 26% CAGR over 3y
Location
D R GROUNDWORKS LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides building and civil engineering contracting services focused on residential groundworks. Undertakes earthworks, ground stabilisation, foundation installation, and highway infrastructure works…
Serves major housebuilders, housing developers, construction contractors, and local authorities involved in residential schemes and highway infrastructure across the south and southwest of England.
Financial Health
WeakWeak · -7% CAGR over 2y
Location
Schofield Groundworks Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides groundworks and civil engineering services for construction projects, including reinforced concrete foundations and basements, underground drainage installation, excavations, external works…
Serves construction clients, developers and commercial or industrial project owners needing groundwork contractors, from minor works to major projects, across Hampshire, the Isle of Wight and…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
Location
Slipform Engineering International (2000) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design-and-build construction services using slipform technology. Develops and deploys patented slipform systems and equipment to construct concrete shafts, silos, bunkers, pumping stations,…
Serves main contractors, infrastructure developers and utility or energy-from-waste project owners on complex construction schemes involving shafts, silos, bunkers, pumping stations and tunnelling.
Financial Health
StableStable · Hiring · 19% CAGR over 4y
Location
Off Grid Installs Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
CSS DEVELOPMENTS LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -68% CAGR over 4y
Location
AUDBERNA LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · Hiring · 14% CAGR over 3y
Location
DF HOLDINGS (SOUTHERN) LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides groundworks and civil engineering services for residential housing developments and infrastructure projects. Undertakes site preparation, drainage, foundations, road and highway…
Serves commercial clients in housing, civil engineering and highways, including residential developers and organisations commissioning road schemes and infrastructure projects across Hampshire and…
Financial Health
StableStable · Hiring · 50% CAGR over 1y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides groundwork, infrastructure, and civil engineering services for residential developments and construction projects. Activities include site preparation, earthworks, soil stabilisation, haul…
Serves national house builders, property developers and local authorities in the south of England, from smaller residential developments to multi-million-pound projects.
Financial Health
WeakWeak · -2% CAGR over 4y
Location
R J Bull Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides environmental contracting services focused on rivers and wetlands, including river restoration, habitat creation and management, wetland and natural flood management, lake and pond works,…
Serves landowners, estate managers, councils and environmental agencies managing rivers, wetlands, lakes and sensitive habitats, including SSSI and SAC sites, mainly in the south of the UK.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 3y
Location
UK ROAD SERVICES LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · 0% CAGR over 1y
Location
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How Southampton Civil Engineering companies work and how to sell to them
What they do
Revenue is usually earned through priced works rather than recurring subscription income: tendered project packages, call-off maintenance, measured-term works and specialist civils packages. The commercial model blends labour, plant, materials, subcontractor margin and risk pricing, with cash flow shaped by staged applications, variations, retentions and final account negotiation. The offer is physical delivery supported by engineering judgement: groundworks, drainage, utilities interfaces, highways, structures, public-realm works and site enabling, often with project management wrapped around delivery. Services income may come from surveys, design coordination or pre-construction advice, but most of the value sits in site execution and contract control.
Who they sell to
Most customers are organisations that own, operate or procure infrastructure: local public bodies, regulated utilities, ports-adjacent operators, developers, industrial estates and facilities with heavy site constraints. Buying committees usually include procurement, asset managers, engineering leads, commercial teams, health-and-safety managers and project sponsors; finance joins when risk, insurance or cash exposure is material. Lower-value reactive work may be bought through direct relationships or approved-contractor lists, while capital works tend to move through tenders, frameworks and formal scoring. Sales cycles are therefore mixed, from short operational decisions to extended bid processes where method statements, certifications, references and commercial exclusions matter.
What they buy
Most Southampton civil engineering firms tend to spend on tools and services that reduce bid risk, protect margin and keep sites auditable. Relevant categories include estimating, bid management, project accounting, cash forecasting, document control, workforce scheduling, field reporting, health-and-safety administration, subcontractor onboarding, plant and fleet management, materials purchasing and insurance broking. Larger contractors may also buy CRM, tender-intelligence services, cyber security, payroll, HR, training, recruitment, legal advice and environmental reporting. The case usually needs to connect to a live operational cost, such as reducing rework, shortening application cycles, controlling variations or making site evidence easier to retrieve during client review.
Why and how to sell to them
Buying triggers tend to appear when contractors win a framework place, take on a larger package than usual, add project managers, change commercial leadership or experience a margin squeeze on labour, plant or subcontracted works. The 139 firms incorporated since 2022 are likely to be earlier in their systems choices, while more established operators may need help replacing spreadsheets and informal site reporting. Outbound usually lands better when it references contract leakage, safety evidence, retentions, slow approvals or bid workload, rather than generic growth language. Proof points should be practical: fewer missed variations, cleaner audit trails, faster payment applications or less duplication between site and office.
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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Frequently asked questions
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