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M&E Contracting Companies in the UK: 3,400+ Active Firms (2026)
M&E contracting companies in the UK design, install and maintain mechanical and electrical building services for commercial and public-sector sites.
Buying centres tend to sit with main contractors, developers, facilities managers and public bodies that need accountable delivery across mechanical, electrical, plumbing, HVAC, fire, security and controls packages. Sales are usually project-led, with pre-construction estimating, tender qualification, commissioning capability and maintenance cover carrying as much weight as headline price. The relevant suppliers are not small domestic trades: they handle non-domestic sites across commercial, industrial, healthcare, education, residential, data-centre and public-sector work, often blending installation with planned maintenance, reactive call-outs and compliance-led building services contracts.
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The UK cohort contains 3,477 actively trading M&E contractors. Reported headcount totals 6,912 people, giving a visible employment footprint across the firms that publish staff numbers. The commercial shape is mixed: some contractors look geared to national project delivery and maintenance frameworks, while many others are likely to be regional specialists working through main-contractor and facilities-management channels. For researchers comparing this list with adjacent construction-services markets, the practical distinction is capacity. Buyers of non-domestic building services often need documentation, commissioning resource and aftercare coverage, not just trade labour for installation packages.
Project risk, not a shared sector rulebook, does most of the organising work. Main contractors and developers typically expect evidence of commissioning discipline, site safety processes, insurance cover, subcontractor management and the ability to coordinate packages across construction and maintenance phases. Public bodies and facilities managers add procurement discipline and service-level expectations, particularly where planned maintenance, reactive maintenance, fire, security or controls work keeps buildings operational. That makes compliance a commercial qualifier as much as a technical one: firms that cannot evidence documentation, handover and maintenance processes tend to be less plausible for larger non-domestic contracts.
Established contractors appear better placed than newly formed specialists where buyers want installation, commissioning and maintenance from the same accountable supplier. Smaller firms may still find room around specialist packages, local reactive work and subcontracted delivery, but progression into higher-value projects tends to require documented processes, retained technical staff and enough balance-sheet depth to absorb payment timing. The cohort’s shape points to gradual sorting rather than a wave of new entrants: public-sector and commercial buyers are likely to keep favouring suppliers that can evidence delivery capacity across the building-services lifecycle.
3,477
Active firms
2026
648
Above £5M
Larger revenue band
176
New since 2022
Recent incorporations
Key facts
About 18% of the trading cohort reports turnover above £5M (648 of 3,477 firms) — the rest sits below that revenue band.
5% of the cohort was incorporated since 2022 (176 firms), so a sizeable share is in its first few filing cycles.
M&E contractors sit between construction delivery and ongoing facilities maintenance, rather than pure materials supply.
The work covers mechanical plant, electrical systems and the building services needed to keep commercial and public-sector sites usable.
Larger operators tend to compete for multi-site commercial contracts, public-sector work and maintenance-heavy accounts.
The market appears fragmented below the national-contracting tier, with a long tail of smaller operators.
Top UK M&E contracting companies
PHOENIX ME LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical engineering services for construction projects, including MEP system design, digital construction, installation and commissioning. Works on developments such as…
Serves B2B and public sector clients commissioning mechanical and electrical engineering on construction projects, particularly in data centres, commercial offices, banking, infrastructure, sciences,…
Financial Health
HealthyHealthy · Growing · 1% CAGR over 4y
Location
KANE GROUP BUILDING SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical, electrical and public health building services for construction projects. Activities include system design, offsite prefabrication, installation, fit‑out, commissioning,…
Serves B2B construction clients across the UK and Ireland, including main contractors, developers and project teams in commercial fit-out, education, hospitality, healthcare, industrial, defence,…
Financial Health
StableStable · -66% CAGR over 4y
Location
H.Malone and Sons Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical, electrical and plumbing engineering services for construction and refurbishment projects. Delivers design development, BIM coordination, installation, commissioning and…
Serves public- and private-sector construction clients across education, healthcare, defence, transport, commercial and retail, hotels, student accommodation, residential, industrial, custodial and…
Financial Health
StrongStrong · Profitable, Hiring · 13% CAGR over 4y
Location
A&B ENGINEERING MEP LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical, electrical and plumbing (MEP) engineering services for construction projects, including system design, 3D/BIM modelling, and installation of HVAC, air conditioning, heating,…
Serves UK main contractors, developers, consultants and public sector clients involved in commercial, healthcare, education, residential, retail, hospitality and industrial construction projects.
Financial Health
StrongStrong
Location
Emtec Southern Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns, installs and maintains building services and smart building systems, including mechanical and electrical installations, building management systems, fire detection and protection, smoke…
Serves B2B and public-sector clients in commercial property, residential development, healthcare, heritage, education and leisure, including developers, main contractors, building owners and…
Financial Health
WeakWeak · -9% CAGR over 5y
Location
MATIC BUILDING SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical, electrical and plumbing (MEP) engineering services for construction projects, including system design, installation and commissioning. Also installs fire detection and security…
Serves construction-sector clients across the UK, particularly developers and main contractors delivering high-rise residential, multi-unit and commercial schemes, plus property managers needing…
Financial Health
HealthyHealthy · -86% CAGR over 2y
Location
PRIMECH BUILDING SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical building services engineering, including design, installation, testing, commissioning and maintenance of M&E systems. Produces CAD/BIM designs and installs…
Serves property developers, main contractors, facilities managers and public-sector estate teams across healthcare, education, airports, commercial offices, cultural venues and high-end residential…
Financial Health
HealthyHealthy · -59% CAGR over 4y
Location
TDK MECHANICAL SERVICES (UK) LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides mechanical and electrical building services including design, installation, testing and maintenance. Offers commercial fit-outs, building maintenance, HVAC, gas and electrical servicing,…
Serves businesses, public sector bodies and property developers across the UK, including commercial, industrial, education, institutional and residential property clients with building projects and…
Financial Health
StrongStrong · Growing, Hiring · 16% CAGR over 3y
Location
Roberts & Prowse (Swindon) Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting, facilities management, heating, plumbing and HVAC installation, gas services, steelwork fabrication, specialist welding, and interior fit‑out and…
Sells to business and public sector clients, primarily main contractors in construction supply chains. Serves commercial, industrial, government, healthcare, local authority, education, leisure,…
Financial Health
StrongStrong · Profitable, Growing, Hiring · 11% CAGR over 3y
Location
LJJ LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides design, installation and commissioning of mechanical, electrical and plumbing (MEP) building services for construction projects, including public health systems and planned preventative…
Serves B2B and public-sector clients in education, government, commercial property, healthcare, hotels, communal housing and retail, typically via project tenders for building services contracts.
Financial Health
StableStable · -91% CAGR over 2y
Location
MAYBOURNE & RUSSELL LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting services including design, installation and maintenance of building systems. Delivers full M&E packages for commercial, residential and industrial…
Serves main contractors and commercial or industrial clients across the UK, especially in education, healthcare, Ministry of Justice, leisure and industrial sectors, with some residential customers.
Financial Health
WeakWeak · -3% CAGR over 2y
Location
WEST LANCASHIRE GROUP LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides electrical and mechanical engineering services including MEP design and installation, facilities maintenance, building services engineering, and interior fit-out for commercial construction…
Serves B2B and public-sector clients commissioning building projects and facilities support, including main contractors, developers, property owners, education providers, sports venues and operators…
Financial Health
StrongStrong · Profitable, Growing · 0% CAGR over 3y
Location
PRICE BUILDING SERVICES LIMITED
Trajectory
3y · 2020–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical, electrical and public health (MEP) building services for construction projects, including design and BIM modelling, design for manufacture and assembly (DfMA), installation,…
Serves B2B clients in construction and property, including developers and main contractors delivering offices, workspaces, transport infrastructure, education facilities, retail/leisure sites and…
Financial Health
HealthyHealthy · Profitable, Hiring · 7% CAGR over 2y
Location
BJF GROUP LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides construction, facilities management, mechanical and electrical (M&E) services, fit-out and refurbishment, and building decarbonisation. Designs, builds and maintains commercial and public…
Serves B2B and public sector clients, including Tier 1 contractors, government, healthcare, infrastructure, defence and other private-sector organisations needing building projects, maintenance and…
Financial Health
HealthyHealthy · Hiring · 22% CAGR over 3y
Location
Ash Integrated Services Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides integrated mechanical and electrical contracting services including design, installation and maintenance of electrical systems, heating, ventilation and air conditioning, plumbing, and…
Serves business owners and facilities managers across the UK, including education providers, hospitality businesses, manufacturers, councils, commercial property operators and housing organisations.
Financial Health
StrongStrong · Growing, Hiring · 23% CAGR over 3y
Location
Drayton Beaumont Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and installs mechanical and electrical engineering systems for construction projects. Provides building services including HVAC and electrical installations, in‑house design and modelling,…
Serves main contractors, developers and facility owners in the UK construction sector, including education, hotels, retail, residential, commercial, industrial, healthcare, aerospace, transport and…
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
Carbon Synergy Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design, installation, commissioning and maintenance of mechanical, electrical and plumbing systems for buildings, including HVAC, power distribution, lighting, fire alarms, security systems,…
Sells to businesses and property project stakeholders needing turnkey MEP services, including commercial building developers, contractors and facilities teams requiring integrated mechanical,…
Financial Health
HealthyHealthy · 2% CAGR over 4y
Location
Drayton Beaumont Group Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDesigns and installs mechanical and electrical engineering systems for construction projects. Provides electrical installations, mechanical services, in‑house design and development, facilities…
Serves B2B construction-sector clients, including blue-chip companies, developers and facility owners across education, hotels, retail and mixed-use, residential, commercial, industrial, healthcare,…
Financial Health
StrongStrong · Profitable, Hiring · 72% CAGR over 3y
Location
G & H GROUP OF COMPANIES (HOLDINGS) LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides mechanical, electrical and public health (MEP) engineering services for buildings, including design and BIM modelling, prefabricated M&E systems, installation and project management,…
Serves UK businesses, tier-one contractors, blue-chip corporations, SMEs, end users, building and energy consultants, and government/private-sector clients with building portfolios needing MEP…
Financial Health
WeakWeak · 1% CAGR over 1y
Location
JRS Mechanical Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting services, including design, installation and maintenance of building services and facilities systems for healthcare, education and commercial sectors…
Serves public- and private-sector organisations across the UK, particularly healthcare providers, schools, colleges, universities, and commercial property or facilities teams.
Financial Health
StableStable · 3% CAGR over 2y
Location
KEYPLAN ENGINEERING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical building services including design, installation and commissioning of heating, plumbing, ventilation, air conditioning, electrical and renewable energy systems,…
Targets B2B construction buyers, including main contractors, developers and project directors, on commercial construction and refurbishment projects; project examples emphasise education, healthcare,…
Financial Health
WeakWeak · -2% CAGR over 4y
Location
VAUGHAN ENGINEERING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical building services engineering, including design, manufacture, installation and maintenance of systems such as lighting, heating, ventilation, plumbing, power…
Serves public and private sector organisations across the UK and Ireland, including clients in industry, commerce, education, healthcare, retail, leisure, hospitality, offices and pharmaceuticals.
Financial Health
StrongStrong · Hiring · 8% CAGR over 4y
Location
R. J. STEARN LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and mechanical building services including design, installation and maintenance of electrical systems, HVAC, ventilation and air conditioning, fire alarms and suppression,…
Serves B2B clients across the construction and built-environment sectors, including main contractors, fit-out/refurbishment firms, facilities managers and organisations responsible for commercial…
Financial Health
StableStable · -63% CAGR over 5y
Location
J.F. & H. Dowds Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical, electrical and specialist engineering services for building projects, including design, systems integration, installation and project delivery of M&E systems across sectors such…
Serves B2B and public-sector clients in complex built environments, including healthcare, life sciences, education, pharmaceutical, industrial, and commercial/leisure organisations with…
Financial Health
StableStable · Profitable, Hiring · 5% CAGR over 4y
Location
Bromor EMS Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and mechanical engineering services for commercial construction projects, including MEP design, installation and commissioning, LV power distribution, lighting and controls, data…
Serves B2B and public-sector clients developing or operating modular, commercial, education, healthcare, retail, justice and defence facilities, typically project owners, contractors and facilities…
Financial Health
StrongStrong · Growing, Hiring · 23% CAGR over 5y
Location
A. & B. ENGINEERING (MECHANICAL SERVICE DIVISION) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical engineering services including design and installation of HVAC, plumbing, gas distribution, renewable energy systems, building management controls, and fire…
Serves UK main contractors, developers, consultants and public sector clients on healthcare, education, residential, commercial, retail, hospitality and industrial construction projects.
Financial Health
HealthyHealthy · Profitable, Hiring · 15% CAGR over 2y
Location
JPR Mechanical And Electrical Services Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides mechanical, electrical and plumbing (MEP) building services, including system design, installation and maintenance. Also installs fire and security systems and delivers networking, data and…
Serves businesses and organisations across various industries, including property owners, developers, main contractors and facilities managers responsible for commercial buildings and infrastructure…
Financial Health
StrongStrong · Profitable · -4% CAGR over 3y
Location
BJF CONNECTIONS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides construction and building services including facilities management, mechanical and electrical installation, fit-out and refurbishment, and decarbonisation projects. Works on design, build,…
Serves B2B and public sector buyers, including Tier 1 contractors, government bodies, healthcare, infrastructure and defence organisations, plus private sector clients needing building project…
Financial Health
StrongStrong · Profitable, Growing, Hiring · 22% CAGR over 3y
Location
MAYBOURNE & RUSSELL (TENTERDEN) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting services, including design, installation and maintenance of building systems for commercial, residential and industrial projects, serving sectors such…
Serves main contractors and commercial or industrial clients across the UK, especially in education, Ministry of Justice, healthcare, industrial and leisure sectors, with some residential customers.
Financial Health
HealthyHealthy · Hiring · 491% CAGR over 2y
Location
A.P. Mitchell Building Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides principal contractor and building services for construction and refurbishment projects, including mechanical, electrical, plumbing, and fire and security system installation. Delivers…
Serves UK organisations of all sizes across commercial, retail, manufacturing, leisure, hospitality, education, local government and residential sectors, including universities, builders’ merchants…
Financial Health
StableStable · Hiring · 11% CAGR over 2y
Location
Wilwright Electrical Contractors Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting services including electrical installations, air conditioning, fire alarm systems, and data and fibre cabling. Also delivers planned and reactive…
Serves domestic, commercial, public sector, healthcare and industrial property owners and operators across the UK, including schools, universities, manufacturers and organisations using modular or…
Financial Health
HealthyHealthy · -12% CAGR over 2y
Location
AMD ENVIRONMENTAL LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical engineering services for building projects, including MEP design, installation and maintenance. Also delivers facilities management and project management for…
Serves commercial property owners, developers and main contractors, plus hospitality, media, banking, automotive and public-sector organisations needing mid-to-large building projects across the UK.
Financial Health
HealthyHealthy · Profitable · -1% CAGR over 2y
Location
Woodward Electrical Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides mechanical and electrical engineering contracting services including system design, installation and maintenance, control and process systems, fire safety, security and access systems,…
Serves business and site-based clients across industrial sectors, including facilities and estates teams needing mechanical, electrical, fire, security and building services. Targets organisations…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 3y
Location
A.F. CONNELL LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting services, including design, procurement, installation and commissioning of building services systems for commercial, industrial and residential projects…
Serves commercial and industrial organisations, education and healthcare estates, retailers, leisure operators, office occupiers and large-scale residential developers seeking project-based M&E…
Financial Health
WeakWeak · -11% CAGR over 2y
Location
MAINTENANCE & CONTRACTING SERVICES LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting and building services for commercial projects, including system design, installation and commissioning. Works on HVAC, plumbing, ventilation, power,…
Serves businesses and project clients across the UK in commercial, corporate, hospitality and industrial sectors, including offices, retail centres, hotels, resorts, factories, warehouses and…
Financial Health
StrongStrong · Profitable, Growing, Hiring · 36% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical contracting services for building projects, including design-and-build and installation of shell and core and Cat A/B systems, plant replacement, and pipework.…
Serves B2B construction buyers, including main contractors, developers, consultants and architects, delivering M&E projects for commercial, residential, education, hotel, retail, data-centre and…
Financial Health
StableStable · -63% CAGR over 4y
Location
C Watkins Plumbing Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design, installation and maintenance of mechanical, electrical and plumbing (MEP) systems for construction projects, including high-rise residential developments. Also delivers facilities…
Serves B2B construction and property clients, including developers, main contractors, commercial building owners and facilities teams on high-rise residential, retrofit, flagship and energy-centre…
Financial Health
HealthyHealthy · Profitable · -3% CAGR over 4y
Location
KEY INTEGRATED SERVICES (HOLDINGS) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical engineering services including design, installation and commissioning of building services systems. Delivers HVAC solutions and planned and reactive maintenance,…
Serves UK businesses needing building services support, especially commercial, food and drink production, FMCG manufacturing, industrial, R&D pharmaceutical and healthcare organisations with…
Financial Health
StrongStrong · Hiring · 22% CAGR over 2y
Location
SLEAFORD BUILDING SERVICES LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical, electrical and construction engineering services, including design and installation of heating, plumbing, electrical, ventilation and air conditioning systems, as well as…
Serves commercial and public-sector clients nationwide, including developers, main contractors, landlords and facilities managers for schools, prisons, care homes, offices and other industrial or…
Financial Health
StableStable · Hiring · 12% CAGR over 2y
Location
Carter Electrical Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical contracting services for building projects, including system design, installation, and commissioning. Delivers electrical systems, mechanical building services, and…
Serves public and private sector clients, including developers, contractors, project managers and facilities stakeholders in commercial, industrial, residential, healthcare and public sector building…
Financial Health
HealthyHealthy · -9% CAGR over 4y
Location
Re-Carb Engineering Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical, electrical and public health engineering services for buildings, including design, installation and maintenance of heating, ventilation and air conditioning (HVAC), plumbing,…
Sells to B2B and public sector clients across Great Britain, including education providers, councils, charities, leisure operators, retailers, industrial sites and commercial building owners…
Financial Health
StrongStrong · Hiring · 4% CAGR over 4y
Location
W.Wright Electrical Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides electrical and mechanical contracting services for commercial and industrial buildings, including electrical installations, lighting and power systems, fire alarms, heating, ventilation and…
Serves B2B and public sector buyers in commercial, industrial, education, healthcare and hospitality/leisure settings, including NHS trusts, local councils, universities, police authorities,…
Financial Health
StableStable · 2% CAGR over 3y
Location
GW Power-Safe Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial electrical and mechanical contracting services, including design, installation and maintenance of building systems. Activities include lighting and power installations, fire…
Serves commercial businesses, main contractors, facilities management and estates teams, and public-sector or education sites across the UK needing M&E and renewables project support.
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
J.H.SHOUKSMITH & SONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical contracting services for construction projects, including design and installation of plumbing, heating, air conditioning, electrical systems, ventilation, fire…
Serves UK construction industry clients needing mechanical and electrical packages on building projects, from small works around £50k to major contracts over £5m.
Financial Health
WeakWeak · -2% CAGR over 4y
Location
ROTARIU BUILDING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical building services engineering, including design, coordination, installation and commissioning of M&E systems. Also delivers energy management and facilities…
Serves organisations commissioning complex building projects across the UK and Europe, including developers, main contractors and estates teams needing mechanical and electrical building services…
Financial Health
StrongStrong
Location
ICH Services Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides facilities management and M&E engineering services including HVAC and electrical system design, installation, planned preventive maintenance, emergency repairs, and asset condition reporting…
Serves UK businesses and public-sector organisations with multi-site property portfolios, including retailers, logistics operators, transport firms, offices and warehouses needing facilities and M&E…
Financial Health
StableStable · 4% CAGR over 2y
Location
Control Electrical Engineers Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical contracting services, including design, installation, commissioning and maintenance of electrical systems, air conditioning, ventilation, heating and plumbing. Also…
Serves commercial property owners, contractors and facilities managers in offices, schools, hospitals, retail premises and hotels, plus high-end private residential clients.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 4y
Location
Kennedy Services Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides mechanical, electrical and plumbing (MEP) engineering services including design, installation, commissioning, fault diagnosis, maintenance and repair of building services systems for…
Serves private and public sector organisations across the UK that procure building services projects, including design-and-build and traditional construction clients in sectors such as healthcare and…
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 3y
Location
E.H.Humphries (Norton) Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting services for commercial construction projects, including system design, installation and commissioning of building services, and project handover with…
Serves B2B and public-sector clients in the commercial construction market, including NHS trusts, hospitals, retail sites, industrial facilities, and main contractors across the UK.
Financial Health
WeakWeak · 4% CAGR over 2y
Location
Acorn Mechanical Pipework Services Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical engineering services including pipework installation, HVAC, heating, chilled water, ventilation, plumbing, and power and lighting systems. Offers design,…
Serves B2B and public-sector clients in healthcare, education and industrial built environments across the UK, including hospital estates teams, schools, universities, contractors and facilities or…
Financial Health
StrongStrong · Hiring · 6% CAGR over 2y
Location
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How UK M&E contracting companies work and how to sell to them
What they do
M&E contractors earn most of their income from project packages rather than product sales. Pricing is usually built from tendered labour, materials, specialist kit, subcontractor allowances and margin, then adjusted through variations as design and site conditions change. Smaller engagements include reactive call-outs and planned maintenance; larger relationships bundle design coordination, installation, testing, commissioning, handover packs and aftercare. Recurring revenue usually comes from maintenance contracts, compliance inspections and call-out cover, but project cash flow still tends to dominate working-capital pressure.
Who they sell to
Contract awards usually follow pre-qualification, estimating, clarification meetings and commercial negotiation rather than self-serve purchasing. Main contractors often buy through bid teams and project directors; developers involve technical advisers, cost consultants and asset managers; facilities managers look to operations, compliance and service-level coverage. Public-sector work tends to move through frameworks, formal tenders or RFPs, with finance and procurement functions testing insurances, accreditations and balance-sheet capacity. Sales cycles can run for months because specifications, design liability, site access and payment terms must be agreed before mobilisation.
What they buy
M&E firms tend to spend on systems that reduce estimating error, site friction and cash leakage. Relevant categories include bid management, take-off and estimating software, project accounting, job costing, procurement, document control, field-service scheduling, mobile site forms, asset registers, fleet management, payroll, HR, training, health and safety, cyber security and CRM. They also buy recruitment support, temporary labour, plant hire, testing equipment, calibration, insurance, legal advice and accounting services. Because margin is made or lost at package level, tools that connect bids, labour, materials, variations and invoicing usually have a clearer case than generic productivity claims.
Why and how to sell to them
M&E buyers tend to evaluate vendors when project volume rises, maintenance work becomes a larger share of revenue, a framework win changes reporting requirements, or leadership hires add commercial and operational scrutiny. Common pain points include late payment, retention, variation disputes, labour availability, subcontractor coordination, compliance paperwork and weak visibility between site teams and finance. A contractor above £5M revenue is often a more plausible buyer for workflow, reporting and control systems than a very small specialist. Outbound works better when it links the offer to bid conversion, margin protection, faster handover or lower administrative load, rather than general claims about efficiency.
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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