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Electrical Works Companies in Swansea: 209 Active Firms (2026)
Electrical works companies in Swansea design, install, inspect and maintain wiring, power, lighting and safety systems across local buildings.
Buying centres tend to sit with facilities managers, housing providers, main contractors, commercial landlords and public-estate teams rather than a single technical buyer. Work is usually won through local reputation, accreditations, framework eligibility and the ability to handle testing, certification and call-out cover. Typical engagements range from small domestic jobs and landlord inspection work to planned commercial fit-outs, maintenance packages and safety-system upgrades. The better-fit suppliers are SME and mid-market contractors with enough operational depth to manage scheduling, site documentation and subcontractor interfaces, but still close enough to Swansea to respond to local building-stock and estate-management needs.
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Swansea has 209 actively trading electrical works companies, with reported headcount across the cohort totalling 760. The scale mix looks mostly local-contractor rather than national-platform: 9 firms report turnover above £5M, while 60 have been incorporated since 2022. That leaves a broad base of small service teams, plus a narrower set able to take on larger commercial, housing-association or public-estate work where site coverage, certification processes and repeat maintenance matter. For buyers, turnover band is likely to be a practical proxy for capacity, rather than a guide to technical suitability on its own.
Dwelling work sits closest to formal building-control rules. Building Regulations Part P covers electrical safety in dwellings where it applies, with Approved Document P setting expectations around notification, design, installation, inspection, testing and information handover. Competent person schemes also matter commercially: registered installers can self-certify certain building work instead of seeking separate building regulations approval, and electrical-scheme members appear on the electrical competent person register. The Building Safety Regulator adds a further market-structure reference point, with a duty under the Building Safety Act to keep building safety and standards under review in England.
Local demand appears likely to remain service-led, with maintenance, inspection, remedial work and compliance documentation taking a steady share of contractor time. The cohort’s shape suggests many operators remain small, while a smaller set competes for planned works that need supervision, audit trails and multi-site scheduling. Margin pressure tends to come from labour availability, materials pricing and the need to keep accreditations current, rather than from software-style scale effects. Some consolidation may occur around firms with repeat commercial accounts, though the market still looks suited to owner-managed contractors with local response capacity.
209
Active firms
2026
9
Over £5M turnover
Larger local operators
60
Incorporated since 2022
Recent local entrants
Key facts
About 4% of the trading cohort reports turnover above £5M (9 of 209 firms) — the rest sits below that revenue band.
28% of the cohort was incorporated since 2022 (60 firms), so a sizeable share is in its first few filing cycles.
Approved Document P is statutory guidance for electrical safety in dwellings in England, covering notification, design, installation, inspection and testing requirements.
Electrical installers can use a competent person scheme to self-certify certain building work instead of obtaining separate building regulations approval.
Since April 2023, the Building Safety Regulator has had a duty under the Building Safety Act 2022 to keep building safety and standards under review in England.
The UK electricians market was £35.9 billion in 2024.
European electrical contracting is SME-heavy, with EuropeOn describing the sector as fragmented rather than concentrated around a few large operators.
Top Swansea Electrical Works companies
Phillips Services (Wales) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services for domestic and commercial properties, including electrical installations, maintenance, inspection and testing of installations, and installation of electric…
Serves homeowners, landlords and commercial organisations across South and West Wales, including businesses, schools and hospitals needing electrical contractors for properties and installations.
Financial Health
HealthyHealthy · -15% CAGR over 2y
Location
GUARDIAN PROPERTY SERVICES(GPSUK) LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical installation and maintenance, fire and security systems, networking and telecoms, facilities management, construction and shop fitting. Delivers property maintenance, design,…
Serves domestic, commercial and industrial property owners, landlords and facilities managers across South Wales and the M4 corridor from Carmarthen to Bristol, from single homes to high-rise…
Financial Health
HealthyHealthy · -2% CAGR over 5y
Location
BOWEN HOPKINS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services for domestic and commercial properties, including electrical installations, wiring and lighting work, maintenance and repairs, safety testing of electrical…
Serves homeowners and businesses in and around Swansea needing domestic or commercial electrical support, including workplace safety testing and fire alarm requirements.
Financial Health
WeakWeak · -6% CAGR over 2y
Location
M & M'S ELECTRICAL CO.LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical installation, maintenance and repair services for domestic and commercial properties, including house rewiring, fault finding, electrical installation condition reports (EICRs),…
Serves homeowners, landlords, holiday rental owners, local businesses and contractors in Swansea needing domestic or commercial electrical support.
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
Lighthouse Electrical Services Direct Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including installation of CCTV systems, photovoltaic solar panels, intruder and fire alarms. Also carries out rewiring, fault finding and consumer unit…
Serves domestic, commercial and industrial customers in South Wales, including homeowners, businesses and industrial sites needing electrical, CCTV, alarm and solar-related services.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
MIRUS ENERGY (CYMRU) LTD (FORMERLY ASHLEY JAMES (SOUTH) LTD)
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides electrical installation and compliance services including fixed wire testing (EICR), solar PV installation, domestic ventilation systems, environmental monitoring, fire and carbon monoxide…
Serves social housing providers, residential new-build developers, commercial fit-out contractors, government bodies and MoD clients needing electrical compliance and installation support across the…
Financial Health
HealthyHealthy · -33% CAGR over 1y
Location
L&W ELECTRICAL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including electrical installations, rewiring, fault repairs, and safety testing and inspections for residential and commercial properties. Also installs solar…
Serves homeowners, property owners, builders and local businesses in Swansea and the surrounding area needing electricians for domestic and commercial premises.
Financial Health
StableStable · Hiring · 28% CAGR over 4y
Location
Andrew D'Auria Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing, heating, gas and electrical services for domestic and commercial properties, including boiler installation and servicing, building maintenance, plant room work, safety checks and…
Serves private households and large organisations in Wales, including local councils, social housing providers, church bodies and public-sector sites such as schools, nursing homes and leisure…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
A BRIGHT SOLUTION UK LIMITED
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical contracting for industrial and commercial projects, including electrical installations, HVAC systems, plant rooms, internal fit‑outs, and groundworks. Manages…
Serves UK main contractors, developers and facilities managers on industrial, commercial, public sector and defence projects, including manufacturing sites and secure multi-site facilities.
Financial Health
StrongStrong · Hiring · 12% CAGR over 6y
Location
AMROC Heating Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical building services including installation and maintenance of air conditioning, building management systems, electrical systems, gas heating and hot water systems,…
Serves public, private and third-sector organisations across the UK, including commercial property operators, education providers, housing organisations, leisure and entertainment venues, healthcare…
Financial Health
StableStable · -12% CAGR over 4y
Location
ALDEN'S LTD
Trajectory
3y · 2019–NowFinancial sub-scores
Computed from 3 filingsProvides building services engineering including design, installation and maintenance of mechanical, electrical and plumbing systems. Delivers MEP contracting, renewable energy integration, and…
Serves B2B and public-sector clients across pharmaceuticals, commercial property, education, healthcare, hospitality, residential, leisure and student accommodation sectors, typically on larger or…
Financial Health
HealthyHealthy · -18% CAGR over 2y
Location
Pioneer Electrical Installations Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Atb Contractors Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
J & A ELECTRICAL SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
K J Future Electrics Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong
Location
Merlin Fire Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design, installation, commissioning, testing, maintenance and servicing of fire alarm systems, specialising in Gent Honeywell equipment. Also conducts fault finding, compliance audits,…
Serves businesses and organisations with Gent Honeywell fire alarm systems, including property owners, facilities managers and project teams, primarily in the Swansea area.
Financial Health
StableStable · Hiring · 4% CAGR over 4y
Location
A. LLOYD ELECTRICAL & SOLAR LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and installs solar photovoltaic (PV) systems and battery storage for residential and commercial properties. Provides electrical contracting services, including system design, installation,…
Serves homeowners and commercial customers in South Wales, including medical practices, churches, farms, factories and sites needing ground-mounted or off-grid solar systems.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
DINEFWR ELECTRICAL & SOLAR LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong · Growing, Hiring · 200% CAGR over 1y
Location
BAYWIFI (UK) LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
Fastec Electrical Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial and industrial electrical services including power and lighting installations, refurbishments, emergency lighting, fire alarms, data and voice cabling, CCTV systems, electrical…
Sells to commercial and industrial customers needing electrical and security services, including businesses, facility operators and property/building projects requiring testing, maintenance and…
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
Atex Installations Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
Let'S Connect Electrical Services Ltd
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
Chris Davies Electrical Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -10% CAGR over 4y
Location
Hutchinson Phillips Electrical Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
POWER PLAN ELECTRICAL & PROPERTY SERVICES LTD
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed
Location
GNR Electrical Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed · 0% CAGR over 3y
Location
E Davies Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable
Location
SKR Electrical Solutions Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
ONI ELECTRICAL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -10% CAGR over 4y
Location
Farrington Electrics Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
Green-Link Electrical Services Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed
Location
EXCEL ELECTRICAL & SOLAR SERVICES LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong · Hiring · 100% CAGR over 1y
Location
Switch Electrical Services (Wales) Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
HOUND SECURITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
R & R Smart Solutions Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StrongStrong
Location
KC ELECTRICAL (WALES) LTD
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
NDW Electrical Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Gavin Electrical Engineering Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides electrical engineering services including industrial and commercial electrical installations, maintenance, inspection and testing. Manufactures PLC and motor control panels, installs fire…
Serves B2B commercial and industrial customers, especially UK manufacturing, petrochemical and hazardous-area operators, as well as property and facility managers needing electrical installation,…
Financial Health
HealthyHealthy · -1% CAGR over 3y
Location
BUILDING SERVICES CONTROLS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and supplies building energy management and control systems. Provides system design, manufacture, electrical installation, project management, commissioning, monitoring and maintenance…
Sells to commercial and residential customers, including public and private sector organisations. Targets education, hospitality and leisure, social and health care, commercial property and…
Financial Health
StableStable · 4% CAGR over 2y
Location
PRAISEWORTHY APPAREL LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides electrical engineering services including electrical system design and installation, high‑ and low‑voltage works, cable laying and jointing, wind turbine maintenance, rope access electrical…
Serves UK businesses and organisations, particularly industrial sites, renewable energy operators, utilities and infrastructure projects needing specialist electrical engineering support.
Financial Health
DistressedDistressed
Location
TAYLORS CROSS WIND ENERGY LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides electrical engineering services including electrical system design and installation, high‑ and low‑voltage works, cable laying and jointing, wind turbine maintenance, rope access works, and…
Serves UK businesses and organisations needing specialist electrical engineering support, including wind energy operators, sites with HV/LV infrastructure, and clients installing EV charging or cable…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
ELECTECHS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides industrial electrical engineering and automation services, including control panel manufacturing, PLC, HMI and SCADA programming, robotic pick-and-place systems, and production line…
Serves industrial and manufacturing businesses, including aerospace, automotive, healthcare, steel, energy and FMCG companies, targeting engineering, production and maintenance teams in large…
Financial Health
WeakWeak · -4% CAGR over 4y
Location
Andrew Wedlake Electrical Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
A & B Electrics Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -7% CAGR over 4y
Location
PENDRAGON ELECTRICAL LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak
Location
FOX SOLAR LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Sub Electrical Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
MYLESJENKINS ELECTRICAL LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
Solair Solutions Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · Hiring · 91% CAGR over 2y
Location
H&T ELECTRICAL LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
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How Swansea Electrical Works companies work and how to sell to them
What they do
Electrical works contractors earn revenue from a mix of quoted projects, scheduled maintenance, inspection and testing work, emergency call-outs and materials charged alongside labour. Domestic jobs are often priced per visit or per small installation, while commercial and public-estate work tends to use fixed-price packages, schedule-of-rates pricing or maintenance agreements. The sale is partly a trade service and partly a compliance workflow: the customer pays for safe installation, but also for certificates, test results, handover packs and someone accountable if faults appear later. Margins usually depend on labour utilisation, van time, rework control and buying terms on cable, lighting, containment and safety equipment.
Who they sell to
Most Swansea electrical contractors sell into a mixed local base rather than one buyer type. Housing providers, managing agents, schools, healthcare estates, commercial landlords, retail sites, hospitality operators and main contractors all buy electrical work, with domestic customers adding smaller-ticket demand. Decision-makers typically include facilities managers, property managers, contract managers, site managers, finance teams and owner-operators. Small jobs may be won by phone referral or online enquiry, while larger packages often move through tender lists, framework routes, subcontractor pre-qualification or repeat-account negotiation. Sales cycles can be short for fault response, but planned works usually involve site visits, priced schedules, risk documents and evidence of competence before approval.
What they buy
Most electrical works firms tend to spend on field-service scheduling, job costing, quoting, accounting, payroll, document storage, certificate management and health-and-safety systems. As firms take on repeat commercial work, they often need better control over engineer diaries, van stock, purchase orders, subcontractor records and customer communications. Non-software purchases matter just as much: vehicles, fuel, insurance, test equipment, tools, access equipment, protective equipment, training, apprenticeships, waste handling and trade materials sit close to day-to-day delivery. Professional services usually include bookkeeping, tax, legal support for subcontract terms, bid-writing help for frameworks, recruitment and marketing aimed at local search or property-sector referrals.
Why and how to sell to them
Electrical works buyers tend to evaluate suppliers when admin starts to constrain site delivery: missed appointments, slow certification, unpriced variations, cash tied up in materials or too much supervisor time spent chasing paperwork. Useful commercial triggers include new maintenance contracts, framework applications, accreditation checks, insurance renewals, office moves, vehicle additions, apprentice recruitment or a shift from domestic jobs into managed commercial work. Outbound messages usually land better when they refer to these operational pressures rather than generic growth. A credible pitch should show how the offer protects margin, reduces repeat admin, improves evidence for compliance or helps supervisors keep electricians productive across local jobs.
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.
Also in Swansea
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Frequently asked questions
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