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Electrical Companies in Portsmouth: 347 Active Firms (2026)
Electrical contracting companies design, install, inspect and test wiring, power and safety systems across Portsmouth’s homes and commercial sites.
Buying centres in Portsmouth tend to sit with facilities managers, main contractors, residential landlords and public-sector estates teams, rather than with a single technology or procurement buyer. Work is usually won through referrals, framework lots, reactive maintenance agreements and project tendering, with engagement sizes ranging from household compliance jobs to fit-outs, refurbishments and planned building-services work. The more attractive commercial targets are contractors with qualified supervisors, field-based engineers and enough back-office capacity to manage certification, scheduling and site documentation across several concurrent jobs.
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Portsmouth has 347 actively trading electrical contracting companies, making the local market large enough for buyer choice but still fragmented by trade specialism, project size and site access. Reported headcount totals 775 people, reflecting a sector where capacity sits as much in employed engineers, supervisors and office coordination as in corporate count. For researchers comparing suppliers, that means turnover band, certification route, call-out coverage and willingness to take on occupied-site work may matter more than age alone.
Domestic electrical work sits under Building Regulations Part P in England. GOV.UK frames Approved Document P as statutory guidance for electrical safety in dwellings, covering when work must be notified and how design, installation, inspection, testing and handover information should be handled. Installers can use a competent person scheme to self-certify certain building work rather than seeking separate building regulations approval, with scheme members appearing on the electrical competent person register. The Building Safety Regulator’s review role adds a broader safety-and-standards backdrop for contractors working around occupied buildings and managed estates.
Demand appears tied to the mundane drivers that usually matter in building-services trades: landlord compliance, estate maintenance, refurbishments, planned upgrades and fault response. Portsmouth contractors with field depth and administrative discipline may be better placed than sole-trader-style operators to handle certification-heavy work, yet the cohort still looks fragmented. Margin pressure is likely to come from labour availability, materials pricing and subcontractor dependence. Consolidation tends to be practical rather than speculative, with acquirers looking for local coverage, accreditations and repeat customer relationships.
347
Active firms
2026
8
Over £5M turnover
72
Since 2022
incorporations
Key facts
About 2% of the trading cohort reports turnover above £5M (8 of 347 firms) — the rest sits below that revenue band.
20% of the cohort was incorporated since 2022 (72 firms), so a sizeable share is in its first few filing cycles.
Electrical work in dwellings falls under Building Regulations Part P in England, covering notification, design, installation, inspection, testing and information requirements.
Installers can use competent person schemes to self-certify certain building work rather than seek separate building regulations approval.
The Building Safety Regulator has had a duty under the Building Safety Act 2022 to keep building safety and standards under review in England since April 2023.
IBISWorld put the UK Electricians market size at £35.9 billion in 2024, placing Portsmouth contractors within a large national services market.
Top Portsmouth Electrical companies
M. W. Electrical Services (Hampshire) Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides electrical installation, maintenance and testing services for domestic, commercial and industrial properties. Carries out rewiring, appliance testing, and installation of access control…
Serves domestic homeowners, landlords, commercial premises and industrial businesses in Portsmouth and across Hampshire requiring electrical contractors.
Financial Health
StableStable · 0% CAGR over 3y
Location
MTK ELECTRICAL SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic, commercial and industrial clients, including electrical installations, rewiring, fuse board upgrades, lighting installation, maintenance, and…
Serves homeowners, landlords and businesses needing electrical contractors, including commercial property managers, facilities management teams, shops, factories, marine/dockyard operators and…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
Taylor Durant
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for commercial and industrial clients, including electrical installation, maintenance support, and manufacture of control panels. Also installs and services…
Serves commercial, industrial and corporate clients in Portsmouth, including manufacturing plants, premises managers and businesses requiring ongoing electrical contractor support.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
AM Electrical South Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for commercial, domestic and industrial properties, including electrical installations, testing and maintenance. Also installs EV charging points, renewable…
Serves homeowners, businesses, commercial property managers and industrial site operators, mainly on the south coast, needing electrical, EV charging, green energy, and fire/security support.
Financial Health
StableStable · Hiring · 6% CAGR over 4y
Location
Glo Electrical Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides domestic electrical services including installations, maintenance, fault finding, electrical testing and inspections, and electrical installation condition reports (EICRs). Also installs EV…
Serves domestic and commercial customers in the Portsmouth area, including homeowners, landlords, property managers and local businesses requiring qualified electricians.
Financial Health
DistressedDistressed · -16% CAGR over 3y
Location
D Squared Electrical Services Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical installation and maintenance services for commercial and industrial properties, including lighting upgrades, emergency lighting testing and electrical condition reports. Installs…
Serves commercial and industrial organisations needing electrical, fire and security installations, including businesses of any size managing premises, staff safety, compliance, access control and…
Financial Health
WeakWeak · 3% CAGR over 2y
Location
JSD Electrical Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services for commercial and domestic properties, carrying out electrical installations, wiring, system upgrades, fault finding, and ongoing maintenance of electrical…
Serves both businesses and domestic customers needing electrical installation and maintenance, including commercial property operators, landlords, facilities managers and homeowners.
Financial Health
StrongStrong · Hiring · 15% CAGR over 2y
Location
Holt Alarms And Electrical Contractors Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, installs and maintains fire and security systems for residential, commercial and industrial premises. Services include intruder alarms, fire alarms, CCTV, access control, monitored alarm…
Serves homeowners, commercial businesses and industrial site operators in Hampshire, West Sussex, Dorset and surrounding South Coast areas.
Financial Health
StableStable · Hiring · 12% CAGR over 4y
Location
SOUTHSEA ELECTRICAL SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Voltic electrical services ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
DBD ELECTRICAL SERVICES LTD
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Photon Renewables Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StableStable
Location
Victory Electrical Services Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StableStable · 0% CAGR over 1y
Location
Voltdrop Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
Jem Property Services Group Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides property maintenance and repair services for commercial and social housing sectors, including gas, plumbing, electrical and drainage work, locksmith services, uPVC window and door…
Serves commercial, public and third-sector property owners/operators in the South, including care homes, schools, housing associations, social housing landlords and facilities management teams.
Financial Health
DistressedDistressed · -4% CAGR over 2y
Location
SOLENT SOUND & FIRE SYSTEMS LTD
Trajectory
5y · 2021–NowDesigns, installs, commissions and maintains sound, security and fire safety systems for commercial and public buildings, including public address and voice alarm systems, fire detection and alarms,…
Serves commercial, industrial and retail organisations in Southampton and Hampshire, including schools, churches and healthcare practices needing site safety, security, fire or audio systems.
Financial Health
Insufficient historyInsufficient history
Location
RLC ELECTRICAL (SOUTHERN) LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
M.J. Warrington & Sons Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · Hiring · 5% CAGR over 4y
Location
OAKLEAF ELECTRICAL SOLUTIONS LTD.
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
AT Solar Contractors Limited
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
CABLE CONNECTIONS LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides commercial and industrial electrical contracting, including power network connections as a NERS‑accredited independent connections provider. Delivers cable laying, civil and groundworks, EV…
Serves B2B and public-sector customers including commercial and industrial organisations, developers, councils and local authorities across England and Wales, with some domestic EV customers and…
Financial Health
StrongStrong · Growing, Hiring · 24% CAGR over 4y
Location
A K Automation And Control Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design and manufacture of electrical control panels and building energy management systems (BEMS/BMS) for HVAC and industrial processes. Offers installation, maintenance, motor and pump…
Serves local authorities, schools and industrial/commercial organisations, including water companies, quarries, waste recycling and tarmac plants, factories and leisure facilities.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
DCI REFRIGERATION & ELECTRICAL LIMITED
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides facilities management and engineering services focused on refrigeration and HVAC systems. Designs, installs and maintains air conditioning, ventilation, electrical, plumbing and heating…
Serves UK businesses and public-sector estates, including supermarkets, convenience stores, cold storage distributors, retailers, offices, childcare premises, student accommodation, educational…
Financial Health
HealthyHealthy · Growing, Hiring · 2% CAGR over 5y
Location
Target Electrical Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 25% CAGR over 5y
Location
APS Verifications Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
L R Blakers Electrical Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
LM Electrics (Southern) Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
PMG Electrics Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Bedborough Electrics Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
TECH SERVICES (HVAC) LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 5y
Location
GM Tambling Electrical Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
AGME Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
GM Fire & Security Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
NRG INSTALLATIONS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable
Location
E-Volve Construction Group Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic, commercial and industrial properties, including electrical installations, maintenance, consumer unit replacements, LED lighting, EV charging…
Serves a mix of B2C and B2B customers: homeowners, office managers, commercial premises and industrial sites around Portsmouth, Southampton and Chichester.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
PARCAR LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and mechanical engineering services including electrical installations, lighting, mains distribution, testing and inspection, air conditioning, ventilation, plumbing and heating…
Serves organisations needing electrical and mechanical engineering support, including public sector and defence-related clients. Targets commercial sites requiring building services, maintenance and…
Financial Health
StableStable · -7% CAGR over 5y
Location
WALKER ELECTRICAL SERVICES (UK) LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides electrical contracting services for domestic, commercial and industrial clients, including electrical installations, rewiring, lighting systems, electric vehicle charging points, electric…
Serves a mix of B2C and B2B customers, including homeowners, commercial and industrial clients, and local authorities, mainly in Hampshire and surrounding areas.
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 3y
Location
TVR ELECTRICAL SERVICES LIMITED
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides electrical contracting services including installation and maintenance of solar PV systems, battery storage and electric vehicle charging points. Serves residential, commercial and…
Serves homeowners and commercial or industrial businesses in Hampshire and West Sussex needing electrical contractors, domestic electricians, solar PV, battery storage or EV charging support.
Financial Health
StableStable · Hiring · 17% CAGR over 5y
Location
Hants Electrical Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic, commercial and industrial properties, including rewiring, electrical installations, inspections and testing (EICR), fuse board upgrades, CCTV,…
Serves domestic customers, homeowners, landlords and new-build clients, plus commercial and industrial organisations such as shops and offices across Hampshire, surrounding counties and South London.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
IDC Electrical (Southern) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical contracting services including electrical installation, inspection and testing, control systems, CCTV and data cabling, fire alarms, plumbing, ventilation, air…
Serves commercial and public-sector clients on the South Coast, including education providers, building owners and project stakeholders requiring mechanical and electrical contractors for property…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
Beatties Mechanical Contractors Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and mechanical contracting services including design, supply, installation and commissioning of building services systems. Also undertakes main contracting work and refurbishment…
Serves business clients commissioning electrical, mechanical, renewable and main contracting projects, including companies managing building works across the south of the UK.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
CURA ELECTRICAL LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical design, installation, maintenance and testing services for residential and commercial properties. Conducts electrical surveys, EICR inspections, wiring installations including…
Serves commercial property operators, transport hubs such as ferry ports, train stations and airports, residential developers and residential customers, with emphasis on clients in the South of…
Financial Health
StableStable · 33% CAGR over 1y
Location
BAUDELAIRE LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical design, installation and contracting services for commercial and residential projects. Installs lighting systems, smart home automation, CCTV, fire alarms and access control, and…
Serves commercial clients, construction teams, architects, schools, colleges, hospitality venues, offices, retail outlets, industrial sites, residential block managers and private homeowners across…
Financial Health
HealthyHealthy · -3% CAGR over 2y
Location
Premlex Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical installation, repair and maintenance services for domestic, commercial and industrial properties. Services include rewiring, lighting and heating systems, electrical inspection…
Serves domestic homeowners, landlords, commercial premises, industrial sites and agricultural customers along the South Coast.
Financial Health
HealthyHealthy · Growing, Hiring · 5% CAGR over 4y
Location
Premelec Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides design and installation of mechanical and electrical building services, including electrical systems, data and communications cabling, plumbing and heating, air conditioning, and renewable…
Serves B2B clients in the built environment, including construction teams, contractors, developers and commercial property owners needing M&E support for refurbishment and infrastructure projects.
Financial Health
DistressedDistressed · 0% CAGR over 1y
Location
Skyforge Electrical Solutions Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical services including installations, system upgrades, fault finding and maintenance. Undertakes work on commercial and public sector buildings such as schools, libraries and care…
Serves commercial, industrial and public-sector site operators, including contractors and facilities teams responsible for schools, libraries, fire stations and care homes.
Financial Health
StableStable · Hiring · 15% CAGR over 2y
Location
Wing's Technical Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides facilities management and building services including electrical and mechanical maintenance, fire and security system installation and monitoring, and building construction, refurbishment,…
Serves B2B and public-sector facilities across the South of England, including schools, care homes, MOD buildings, factories, construction clients, and commercial, industrial and educational…
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
RSE Electrical & Maintenance Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including design, verification, installation and maintenance of electrical systems. Works on commercial and industrial projects across sectors such as…
Serves commercial and industrial clients, including organisations in education, rail, healthcare, retail, property, engineering and manufacturing across southern England and London.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
MACHINE TOOL & ENGINEERING SERVICES LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical engineering services including machinery servicing, equipment installation, breakdown repair, and ongoing maintenance. Conducts electrical testing and inspection,…
Serves industrial and commercial businesses, marine and naval operators, defence establishments, and public-sector/MOD customers across the South of England.
Financial Health
StableStable · 0% CAGR over 2y
Location
B C G ELECTRICAL SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including electrical installations, rewiring, fault diagnosis and repairs, and planned maintenance for domestic, commercial, and industrial electrical…
Serves domestic customers in Hampshire and commercial and industrial clients across Hampshire, Dorset, Sussex and Surrey, including organisations needing electrical installation and maintenance…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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How Portsmouth Electrical companies work and how to sell to them
What they do
Electrical contractors in Portsmouth earn revenue from installation, inspection, testing, maintenance and remedial work across dwellings, commercial premises and managed estates. Their commercial model is usually a blend of fixed-price project work, day-rate labour, call-out fees, planned maintenance agreements and pass-through materials with a margin. Larger jobs tend to involve surveys, design input, procurement of kit, site coordination and certification at handover; smaller jobs are often priced around attendance, diagnosis and compliance paperwork. Cash conversion can be uneven, because labour is paid weekly or monthly while main-contractor and public-sector payment cycles can stretch beyond the job itself.
Who they sell to
Their buyers are usually property managers, facilities teams, landlords, main contractors, housing providers, local public-sector estates staff and occasionally owner-occupiers with higher-specification works. Decision-makers vary by job type: a site manager may choose a contractor for an urgent fix, while a head of estates, procurement manager or quantity surveyor may control planned works and framework appointments. Smaller domestic and landlord jobs are often won through direct enquiry and referrals. Commercial and public-sector work more often moves through approved supplier lists, tender portals, contractor frameworks or repeat relationships with construction firms, with sales cycles shaped by site surveys, compliance checks and budget approval.
What they buy
Most Portsmouth electrical contractors tend to spend on tools that keep engineers billable and paperwork defensible: job scheduling, field-service management, estimating, certification, asset registers, mobile timesheets, fleet tracking, accounting, credit control and document storage. Firms taking on larger projects may also buy project management, procurement, health-and-safety, HR, training and subcontractor management support. Services spend often includes bookkeeping, payroll, insurance advice, bid writing, accreditation support, recruitment, website maintenance and local search marketing. Infrastructure needs are practical rather than abstract: vans, testing equipment, mobile devices, secure storage, uniforms, personal protective equipment and trade-account arrangements with electrical wholesalers.
Why and how to sell to them
Commercial intent often shows up when contractors add engineers, move from reactive jobs into planned works, bid for framework places, take on more occupied-site work or need tighter control of certification and job margins. Pain points are usually scheduling conflicts, travel time, materials availability, late payment, audit trails and dependence on a few supervisors who hold too much operational knowledge. Sellers tend to get further with a practical angle: reduce office re-keying, improve first-time fix rates, speed up quotes, protect margin on variations, or make compliance evidence easier to produce. Proof from comparable trade contractors will usually land better than broad claims about digitisation.
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 Portsmouth
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Frequently asked questions
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