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Trades Companies in Portsmouth: 2,796 Active Firms (2026)
Trades companies in Portsmouth deliver installation, repair, maintenance and site services for homes, commercial premises and public buildings.
Buying centres cluster around estates and facilities teams, homeowner call-outs, principal contractors and public-building maintenance teams, rather than a single software-style buyer. Typical work ranges from reactive domestic repair and small installation jobs to planned maintenance packages, subcontracted site labour and framework-style cover for commercial or public premises. The commercial model tends to depend on local response times, proof of competence, job scheduling, subcontractor management and repeat service coverage. Residential buyers usually procure by task and availability; commercial and public-sector buyers place more weight on insurance, safety paperwork, statutory registration and the ability to field teams across the surrounding metropolitan area.
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Portsmouth has 2,796 actively trading trades companies, making the local cohort sizeable but still mostly contractor-led in character. Reported employment totals 2,036 people, so the payroll footprint is visible without turning the market into a conventional large-employer sector. Only 27 sit above £5M turnover, which points to a narrow upper tier of regional contractors, specialist installers and maintenance operators. A newer layer is also present: 607 were incorporated since 2022, giving the list a mix of established local service businesses and younger operators trying to build route density, compliance processes and repeat commercial work.
Field work in building trades sits under overlapping duties rather than a Portsmouth-specific sector licence. Building Safety Regulator guidance under amended Building Regulations places duties on clients, designers and contractors, with higher-risk building work attracting closer competence and control expectations where height, residential use, hospital use or care-home use bring it into scope. GOV.UK guidance also treats competent person schemes as a route for installers to self-certify eligible building work, provided minimum technical competence is met. Gas work is stricter: businesses and engineers must hold statutory registration before carrying it out legally, and that registration has to be kept current.
Portsmouth’s trades cohort appears likely to remain fragmented, with many operators competing on locality, response discipline and evidence of competence rather than on proprietary technology. Compliance work tends to favour businesses that can document qualifications, subcontractor controls and job histories, while lean contractor-led models can still win reactive residential work where trust and availability matter. The scarcity of larger turnover operators suggests that succession, bolt-on acquisition and public-sector framework access may shape the upper end. Margin pressure may push more firms toward planned maintenance and specialist installation work, but the sector does not read like a winner-takes-most market.
2,796
Active firms
2026
607
Newer firms
incorporated since 2022
27
Above £5M
reported turnover
Key facts
About 1% of the trading cohort reports turnover above £5M (27 of 2,796 firms) — the rest sits below that revenue band.
21% of the cohort was incorporated since 2022 (607 firms), so a sizeable share is in its first few filing cycles.
Building work in England is governed through the Building Safety Regulator, with the Building Regulations etc. (Amendment) (England) Regulations 2023 setting client, designer and contractor duties.
Higher-risk buildings include those with at least 7 storeys or at least 18 metres high and 2 residential units, a hospital or a care home.
GOV.UK says competent person schemes allow installers in the building trade to self-certify certain types of building work instead of seeking building regulations approval, subject to minimum technical competence requirements.
Gas work is narrower: businesses and engineers must be on the Gas Safe Register to carry out gas work legally, and registration must be renewed every year.
ONS reports construction new orders rose 5.6% in 2024 to £71,707 million.
Top Portsmouth Trades 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
MOUNTJOY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides construction, refurbishment, housing maintenance and facilities management services. Delivers new-build and extension projects, property renovations, responsive repairs, gas servicing, and…
Serves public and private sector clients across southern England, including housing associations, local authorities, schools, academies, colleges, universities, health and care providers, leisure and…
Financial Health
HealthyHealthy · Profitable, Growing, Hiring · 3% CAGR over 4y
Location
24/7 Drainage Solutions Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides drainage and plumbing services including drain unblocking, CCTV drain surveys, drain relining and repairs, high‑pressure jetting, gutter and downpipe clearance, water mains repair and…
Serves homeowners, home buyers, landlords and commercial property customers in Waterlooville, Portsmouth, Southampton and Hampshire needing drainage, plumbing and property maintenance support.
Financial Health
StrongStrong · Growing, Hiring · 34% CAGR over 3y
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
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
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
LEGACY GLM GROUP LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides commercial property services including fire door installation and fire stopping, reactive and planned building maintenance, groundworks and landscaping, and refurbishment, dilapidation and…
Sells to commercial property stakeholders, especially FM providers, managing agents and estate teams, across commercial, industrial, education, healthcare and public sector buildings. Targets…
Financial Health
StableStable · -40% CAGR over 1y
Location
Hampshire Plumbing & Heating Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and heating contracting services for residential, commercial and new-build projects. Offers mechanical and electrical design, installation and renovation, including underfloor…
Serves B2B property developers, contractors and facilities owners across private and social housing, offices, refurbishment, leisure, industrial, medical and retail premises, alongside domestic…
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 4y
Location
GMP General Maintenance Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building and property maintenance services for residential and commercial properties, including refurbishments, carpentry, brickwork, painting and decorating, kitchen and bathroom…
Serves homeowners, residential property owners, landlords and commercial premises managers in Portsmouth, Southsea and surrounding Hampshire areas.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
Simer Environmental Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides building services engineering including installation, maintenance and repair of HVAC systems, air conditioning and gas boilers. Also delivers electrical services, system testing, fault…
Serves industrial and commercial organisations, facilities managers, property groups and public sector bodies across the South of England, including sites needing building services support.
Financial Health
HealthyHealthy · 4% CAGR over 2y
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
T COLEBORN AND SON LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides building and construction services for commercial and domestic clients, including structural refurbishment, carpentry, brickwork, plastering, roofing, flooring, and mechanical and electrical…
Serves a mix of commercial, public-sector, charity and domestic customers around Portsmouth, including healthcare and education estates, sheltered housing providers, historic/listed building owners…
Financial Health
StableStable · 3% CAGR over 3y
Location
CDM DECORATING & INTERIORS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building refurbishment and maintenance services including interior decoration, passive fire protection, electrical and fire alarm installation, insurance reinstatement works, and commercial…
Serves commercial, public-sector and institutional clients, including healthcare, leisure, residential property and insurance sectors, across Hampshire, Surrey, London, Sussex, Dorset and Berkshire.
Financial Health
StrongStrong · Hiring · 63% CAGR over 4y
Location
Andy Gas Southern Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides domestic heating and plumbing services including gas and LPG boiler installation, servicing and repairs. Installs air conditioning systems, heat pumps and electrical installations, and…
Serves B2C homeowners and residents in Portsmouth and surrounding areas, particularly households with boilers, central heating, plumbing, air conditioning or heat pump systems.
Financial Health
HealthyHealthy · Hiring · 29% CAGR over 2y
Location
ICE BT Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides facilities management and building services including balcony refurbishment and replacement, external cladding installation, fire door supply and inspections, mezzanine construction, and…
Serves public-sector bodies, housing associations, commercial landlords, retail and industrial organisations across the South and South West of England, including managers of apartment blocks,…
Financial Health
DistressedDistressed · -31% CAGR over 3y
Location
Leaves Building & Maintenance Contractors Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides property construction, refurbishment and maintenance services including reactive repairs, building renovation, fit-out, groundworks, landscaping and heritage restoration for housing…
Serves housing providers, local authorities, commercial property clients, schools, universities, care and hospital operators, and government/public sector bodies across the South East, plus some…
Financial Health
StrongStrong · Growing, Hiring · 16% 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
G & N BUILDING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential and commercial building and construction services including new builds, house extensions, property refurbishment, loft conversions and shop fitting. Also carries out plumbing,…
Serves homeowners, property developers and commercial clients needing building work, refurbishment or shop fitting across Portsmouth, Hampshire and West Sussex.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
CDM CONTRACTORS GROUP LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides construction and property contracting services including project management, refurbishment, restoration and decoration. Offers passive fire protection, electrical and fire alarm…
Serves B2B and public-sector clients in the South of England, including commercial property owners, landlords, insurers, healthcare, leisure and community facilities, and organisations managing…
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
Location
CRANESWATER MECHANICAL SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides gas engineering and plumbing services including installation, servicing and repair of gas boilers, central heating systems, water heaters and gas appliances. Also issues landlord gas safety…
Serves homeowners, landlords and older residents in Portsmouth and Hampshire needing domestic gas, heating and plumbing support.
Financial Health
StableStable · -1% 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
Javelin Controls Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering consultancy and installation of building energy management systems (BEMS) and HVAC controls. Services include system design, control panel build, software graphics,…
Serves businesses, institutions and facilities teams with commercial or industrial buildings across Hampshire, West Sussex and the wider south, including clients managing heating, hot water, HVAC and…
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 2y
Location
REDS BUILDERS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides construction services for commercial and domestic clients, including groundworks and civil engineering, commercial refurbishment, responsive property maintenance, CCTV drainage inspections…
Serves businesses, public sector organisations such as local authorities, and domestic homeowners, including customers in commercial property, housing services and residential projects.
Financial Health
HealthyHealthy · 0% CAGR over 2y
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
Sylvadale Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and heating services including general plumbing repairs, leak and pipe fixes, boiler installation, servicing and repairs, and LPG appliance work. Also designs and installs…
Serves domestic customers, landlords and property owners across Portsmouth and the South, including households with LPG appliances and people needing accessible bathroom adaptations.
Financial Health
StableStable · Hiring · 14% CAGR over 4y
Location
THE COMPLETE PROPERTY GROUP (SOUTH) LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides building maintenance, refurbishment and construction services for commercial and residential properties. Services include reactive repairs, roofing, damp and mould treatment, kitchens and…
Serves commercial property owners and managers, leisure and retail businesses, residential homeowners, and block management companies in Hampshire and London.
Financial Health
WeakWeak · Hiring · 20% CAGR over 2y
Location
Empire Contractors Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building and construction services focused on houses in multiple occupation (HMO) developments, including property conversions and refurbishments, extensions, loft conversions, kitchens and…
Serves property developers, investors and landlords seeking HMO and residential construction across Hampshire, plus local homeowners needing renovations, extensions and conversions.
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
BLESSED HANDS CLEANERS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial contract cleaning and facilities management services for offices, retail premises, schools, universities, healthcare buildings and holiday lets. Also carries out builders’ cleans,…
Serves B2B and public-sector clients across South East England, including offices, retail premises, local authorities, corporate headquarters, schools, universities, healthcare facilities, care…
Financial Health
HealthyHealthy · Hiring · 12% CAGR over 4y
Location
BRYNWELL (SOUTHERN) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial refurbishment and fit-out services, including bespoke joinery manufactured in-house. Acts as a main contractor delivering building works, electrical and mechanical installation,…
Serves B2B clients in hospitality, leisure and commercial property, including restaurants, bars, cafes, offices, golf clubs and venues, plus some residential customers.
Financial Health
StrongStrong · Growing · 1% CAGR over 4y
Location
Scotts Contract Services Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides contract cleaning, gardening and grounds maintenance for residential and commercial managed properties. Services include communal area cleaning, window cleaning, lawn and hedge care, weed…
Serves residential and commercial block managers, property management firms and landlords responsible for communal spaces in blocks and managed estates across the South Coast, M25 and London areas.
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 3y
Location
I.M.E. REPAIR SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical, mechanical and fabrication services for marine and industrial sectors, including vessel electrical engineering, breakdown repairs, dry dock support, machining of components,…
Serves B2B customers in the marine and industrial sectors, including vessel owners and operators, ports, contractors and site-based engineering teams needing vessel and plant support.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
TNT Brickwork Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides bricklaying and brickwork subcontracting services for residential construction projects, including extensions, houses and multi‑unit developments. Works with homeowners, builders and…
Serves homeowners, builders and property developers on the South Coast of England, including residential projects ranging from extensions to multi-unit housing and care home developments.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
VS Group Ltd
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides residential and commercial cleaning services including deep cleaning, end‑of‑tenancy cleaning, office cleaning, window and carpet cleaning, oven and gutter cleaning, and post‑construction…
Serves both households and businesses in Portsmouth, including homeowners, tenants, landlords, offices and student accommodation. Targets customers needing one-off or ongoing cleaning,…
Financial Health
WeakWeak
Location
Bluefrog Cleaning Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial cleaning and facilities support services for organisations, including office, retail and accommodation cleaning, bio-cleaning, and cleaning for venues, children’s centres, council…
Serves businesses and public-sector organisations across the South UK, including offices, retailers, accommodation providers, councils, children's centres, country parks, entertainment venues and…
Financial Health
StrongStrong · Hiring · 5% CAGR over 4y
Location
SOLENT REWINDS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electro-mechanical repair and maintenance services for industrial equipment, including electric motors, pumps, fans, gearboxes and conveyor drives. Also offers motor rewinding, refrigeration…
Serves businesses with maintenance teams and production assets, particularly industrial and facilities operators across the Southern Counties, Isle of Wight and Channel Islands needing…
Financial Health
StableStable · -9% CAGR over 2y
Location
R S Divers Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides commercial diving and marine civil engineering services for coastal and inland waterways, including underwater inspections, maintenance and repairs, salvage and recovery, wastewater and…
Serves utility companies, port authorities, local government, waterway operators, shipping companies and civil engineering contractors across the UK and Europe needing inshore or inland water-related…
Financial Health
HealthyHealthy · Hiring · 100% CAGR over 2y
Location
MORGAN IBBS GROUP LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services including power and lighting installations, EV charging point installation, data network cabling, and electrical testing and inspection for commercial,…
Serves B2B clients in commercial, industrial and automotive sectors, alongside residential customers, with projects delivered nationwide.
Financial Health
HealthyHealthy · -13% CAGR over 2y
Location
Ace Dot Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial cleaning services including office, care home, restaurant, school and construction site cleaning. Offers janitorial services, scheduled contract cleaning, and one-off cleaning for…
Serves businesses and organisations in Hampshire and Hertfordshire, including offices, care homes, medical centres, schools, restaurants, pubs, leisure venues, construction firms and…
Financial Health
WeakWeak · -12% CAGR over 4y
Location
Clean Portsmouth Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides domestic and commercial cleaning services, including regular home cleaning, office and industrial premises cleaning, carpet cleaning, end‑of‑tenancy cleaning, and one‑off deep cleans. Offers…
Serves residential households, tenants and landlords, plus businesses of all sizes in Portsmouth, including offices, industrial premises and other commercial sites.
Financial Health
HealthyHealthy · Hiring · 22% CAGR over 4y
Location
Coastline Facilities Support Services Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides property maintenance and repair services for housing and public sector estates, including responsive repairs, preventative maintenance, carpentry, plumbing and drainage, fire door works,…
Serves housing associations, schools, NHS and care settings, civic buildings, defence sites, hotels, leisure venues, retailers and commercial property operators needing planned and responsive estate…
Financial Health
StableStable · Hiring · 25% CAGR over 2y
Location
Storm Air Conditioning Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides design, installation, commissioning, servicing and maintenance of air conditioning, heating, refrigeration and ventilation systems for domestic, commercial and industrial properties,…
Serves domestic, commercial and industrial customers throughout Hampshire, including homeowners, retailers, offices, hospitals, care homes, MOD sites and manufacturing facilities.
Financial Health
StrongStrong · Growing, Hiring · 59% CAGR over 3y
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
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
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
A BECK PLUMBING & HEATING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and heating services including boiler installation, servicing and repair, pipe and tap repairs, heating control installation, bathroom and kitchen plumbing, gas fire and cooker…
Serves homeowners and domestic property customers in Portsmouth and surrounding areas needing plumbing, heating, boiler, gas appliance, bathroom or kitchen work.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
MERIFIELD SOLUTIONS LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides plumbing, gas, and central heating services for residential properties, including boiler servicing and repairs, radiator fixes, bathroom installations and remodelling, and general plumbing…
Serves homeowners and local residents in Gosport, Fareham and surrounding areas needing plumbing, central heating, gas boiler and bathroom work.
Financial Health
HealthyHealthy · -67% CAGR over 1y
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
RJC (Mechanical) Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical building services for commercial and industrial sectors, including design, installation and maintenance of air conditioning, heating, ventilation, refrigeration,…
Serves commercial, industrial and public sector organisations nationwide, including defence, hospitality, retail, healthcare, government and education clients needing building services support.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 2y
Location
ELLIS INTEGRATED SYSTEMS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns, installs and maintains electronic security systems, including CCTV surveillance, access control and door entry systems, intruder and fire alarms, and automated gates and barriers. Provides…
Serves local authorities, private companies, commercial and industrial sites, small businesses, and homeowners, with emphasis on customers across Hampshire needing property security systems and…
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 2y
Location
ECS PLUMBING & HEATING LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides plumbing and heating services including boiler installation, repair and servicing, central and underfloor heating systems, air source heat pumps, air conditioning, power flushing, drainage…
Serves homeowners and business owners across Hampshire who need plumbing, heating, renewable energy, drainage and related engineer services.
Financial Health
StableStable · -3% CAGR over 2y
Location
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How Portsmouth Trades companies work and how to sell to them
What they do
Trades companies earn revenue by selling labour, materials and response capacity, with margins shaped by utilisation, travel time, rework and supplier pricing. Residential work is usually priced as call-out fees, hourly labour, fixed quotes or staged payments for installations. Commercial work more often uses planned maintenance retainers, schedule-of-rates pricing, subcontract packages and project-based quotes tied to principal contractor programmes. The service shape is operational rather than software-like: trained field teams, tools, vehicles, parts, safety paperwork and proof that the right person attended the right job. Repeat revenue tends to come from landlords, facilities teams and local businesses that value availability and documented job history.
Who they sell to
Most Portsmouth trades firms sell into a mix of homeowners, landlords, managing agents, small businesses, principal contractors and estates teams. Domestic decisions are often made by the property owner or landlord, with speed, trust and quote clarity carrying much of the sale. Commercial and public-building work tends to involve facilities managers, estates managers, site managers, quantity surveyors, contracts managers and procurement officers. Sales cycles range from same-day reactive jobs to multi-week tendering for maintenance cover or subcontracted packages. The channel is usually direct, referral-led or local search for smaller jobs, while larger opportunities tend to arrive through contractor networks, approved supplier lists, framework routes or formal quotation processes.
What they buy
Most trades businesses tend to spend on tools that reduce job leakage and admin: scheduling, dispatch, quoting, invoicing, payments, CRM, accounting, document storage and mobile job reporting. Firms with larger field teams also buy fleet management, fuel cards, telecoms, health and safety support, training, insurance, payroll, HR, recruitment and subcontractor compliance checks. Marketing spend is usually practical rather than brand-led, covering local search visibility, reviews, referral management and sector-specific directory presence. Materials purchasing, plant hire, waste handling, uniforms, personal protective equipment and trade finance can also be relevant, especially where project cash flow is stretched by staged payments and delayed customer approvals.
Why and how to sell to them
Trades buyers tend to evaluate suppliers when admin starts to slow job completion, cash collection weakens, field staff are added, or a domestic operator moves into planned commercial maintenance. Other triggers include new statutory obligations, tender requirements, insurance renewals, a move into subcontractor management, or the need to evidence competence across multiple trades. Outbound messages usually work better when tied to operational friction: fewer missed appointments, faster quote turnaround, cleaner compliance packs, better vehicle utilisation, or reduced time chasing invoices. Generic growth claims are less useful than a concrete link to response discipline, auditability, margin protection or the ability to win repeat local work.
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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