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Trades Companies in Southampton: 3,161 Active Firms (2026)
Trades companies in Southampton deliver installation, maintenance and repair work for buildings, homes and commercial sites across the metro area.
Buying centres tend to sit with estates teams, facilities managers, property owners, main contractors and local authorities rather than a central procurement function alone. Work is typically sold as call-out cover, scheduled maintenance, compliance-led inspection, minor works or project packages, with mobile engineers and site teams moving between residential, commercial and public-sector locations. Southampton firms in this profile skew towards small-to-mid-market operators: owner-managed specialists, multi-trade contractors and regional service providers with local depots, repeat accounts and enough field capacity to handle planned and reactive work across the metro area.
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Southampton has 3,161 trades companies actively trading, making this a sizeable local contractor market rather than just a handful of project-led specialists. The reported employment footprint is 2,305 staff, which points to a workforce spread across mobile teams, site supervisors, office schedulers and compliance administrators as well as sole-trader-style operators. The shape is consistent with building fabric, mechanical, electrical, gas and facilities work being bought locally by landlords, commercial occupiers, housing providers and public-sector estates teams, with larger regional contractors sitting alongside many smaller firms.
Trades work in Southampton sits across overlapping rules rather than a single sector licence. Building Safety Regulator guidance under the Building Regulations sets duties for clients, designers and contractors, with competence and accountability now more explicit for building work. Competent person schemes let suitably qualified installers self-certify some work instead of seeking separate building regulations approval. Gas work is narrower: businesses and engineers must hold the required statutory registration to carry it out legally, and that registration has to be renewed on a recurring basis. The result is a market where admin, training evidence and job-level documentation matter almost as much as field availability.
Compliance-heavy work appears likely to favour firms that can evidence competence, schedule repeat inspections and absorb the paperwork attached to regulated jobs. Many local operators will remain specialist and owner-managed, while multi-trade contractors tend to gain share where clients want fewer supplier relationships for maintenance and minor works. Labour availability may remain the main constraint, particularly for certified mechanical, electrical and gas roles. Consolidation looks plausible at the margins, but the market still has reasons to stay fragmented: proximity, trust, emergency response and trade-specific certification all reward local operating depth.
3,161
Active firms
2026
26
Over £5M
turnover
676
Incorporated since 2022
younger cohort
Key facts
About 1% of the trading cohort reports turnover above £5M (26 of 3,161 firms) — the rest sits below that revenue band.
21% of the cohort was incorporated since 2022 (676 firms), so a sizeable share is in its first few filing cycles.
Building work in England is covered by Building Safety Regulator guidance under the Building Regulations etc. (Amendment) (England) Regulations 2023, including 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 states that businesses and engineers must be on the Gas Safe Register to carry out gas work legally, with registration renewed every year.
ONS reports that construction new work in Great Britain increased by 1.4% in current prices in 2024, while new orders rose 5.6%.
FIEC reports that EU construction investment fell by over 2% in 2024, although its investment measure is not directly comparable with ONS current-price Great Britain output.
Top Southampton Trades companies
Gasworks Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides installation, servicing and repair of boilers and central heating systems; installs fireplaces and fires (gas, electric and solid fuel); supplies radiators, controls, cylinders and water…
Serves homeowners, landlords and commercial customers in Southampton and surrounding Hampshire areas needing heating, boiler, plumbing and fireplace support.
Financial Health
HealthyHealthy · -2% CAGR over 4y
Location
QUAYSIDE ELECTRICAL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for commercial and domestic projects, including new-build electrical installations, lighting and power systems, audio‑visual and smart home setups, security…
Serves commercial clients, housebuilders and new-build developers, as well as domestic homeowners across Southampton, the South Coast and wider UK.
Financial Health
StableStable · -10% CAGR over 4y
Location
CROWN HEATING & PLUMBING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides domestic and commercial plumbing and heating services including boiler installation, servicing and repairs, central heating system installation, landlord gas safety certificates, LPG work,…
Sells to homeowners, landlords and commercial property customers needing heating, plumbing and bathroom work. Serves domestic clients as well as businesses requiring boiler installation, servicing,…
Financial Health
StableStable · Hiring · 6% CAGR over 4y
Location
Premise Property Maintenance Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides property maintenance and refurbishment services for residential and rental properties, including home improvements, renovations, plumbing and electrical repairs, gas central heating…
Serves homeowners, landlords, HMO operators, letting agents and some commercial property clients in Southampton and nearby Hampshire areas.
Financial Health
StableStable · 0% CAGR over 4y
Location
GA UK GROUP LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical, mechanical, plumbing and heating contracting services including system design, installation and maintenance. Also installs fire and security systems, generators, pumps and…
Serves a mix of businesses and homeowners, including industrial sites, commercial property operators, airports, residential customers, commercial catering businesses, and clients with domestic or…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
G.E. HARDING AND SONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides domestic plumbing and heating services including boiler installation, repair and servicing, central heating installation, gas safety inspections, landlord certificates, leak and burst pipe…
Serves domestic homeowners, landlords and business customers in Southampton and surrounding areas who need heating, gas and plumbing support, including boiler servicing and safety certificates.
Financial Health
WeakWeak · Hiring · 5% CAGR over 4y
Location
Heatcomp Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial gas engineering, heating, HVAC, air conditioning and plumbing services, including installation, maintenance, compliance checks and emergency repairs. Works with businesses,…
Serves business owners, commercial landlords, and facilities or asset managers responsible for commercial properties across the South Coast, including Hampshire, Dorset and West Sussex.
Financial Health
StableStable · Hiring · 22% CAGR over 4y
Location
TEW BROTHERS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial construction and building services including refurbishments, extensions, alterations and remedial works. Delivers planned and reactive maintenance for building fabric, project…
Serves businesses and public sector organisations needing commercial building work, refurbishment and maintenance, including schools, theatres, visitor centres and other commercial or public premises…
Financial Health
StrongStrong · Growing · 2% CAGR over 4y
Location
JML INTERIORS (UK) LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building refurbishment and interior fit‑out services for commercial, educational, and domestic properties. Services include classroom and washroom upgrades, office partitions and suspended…
Serves schools, colleges and universities, homeowners, and commercial property, office and shop clients in Hampshire and surrounding areas.
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
TARNWALK (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including electrical installations, design and build of electrical systems, testing and inspection, maintenance, energy‑efficiency upgrades, and installation…
Serves businesses, main contractors and commercial property clients, including retail stores, offices and other premises, with projects emphasised in Hampshire and wider UK locations.
Financial Health
HealthyHealthy · -70% CAGR over 4y
Location
AVENUE ELECTRICAL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial and industrial electrical design and installation services, including mains and sub‑mains distribution, containment systems, power and lighting, fire alarms, voice and data…
Serves B2B commercial and industrial clients, including property owners, facilities managers, contractors and construction project teams needing electrical project support.
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
Adalec Electrical Contractors Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic, commercial, retail and industrial projects, including electrical design, installation and commissioning. Also carries out inspection and…
Serves homeowners, domestic property developers, and commercial, retail and industrial businesses, including companies needing maintenance and testing support across the UK.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
CITY CLEANING (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial cleaning and facilities services including office cleaning, window cleaning, washroom hygiene, property and estate cleaning, and maintenance of retail outlets, industrial…
Serves commercial and public-sector organisations, including offices, retail outlets, property managers, industrial buildings, leisure centres, social housing providers, schools and colleges around…
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
R.G. BEATTIE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and mechanical contracting services including design, supply, installation and commissioning of building systems. Also undertakes main contracting works, renewable installations,…
Serves B2B clients in construction and property projects across the south of the UK, including developers, main contractors, facilities teams and commercial building owners needing electrical,…
Financial Health
StableStable · -70% CAGR over 4y
Location
JAMES LISTON BUILDING SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical building services, including design and installation of M&E systems for commercial, industrial, domestic and public sector building construction and refurbishment…
Serves commercial and industrial businesses, public sector organisations and domestic clients, including schools, churches, hospitals, hotels, housing developments, factories and transport facilities…
Financial Health
HealthyHealthy · -55% CAGR over 5y
Location
T & W ELECTRICAL (SOUTH COAST) LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and mechanical design and installation services for domestic, commercial and industrial projects, including mains distribution, lighting and power systems, structured data…
Serves domestic customers, property developers, and commercial and industrial organisations across the South Coast and wider South of England, including clients with small installations and larger…
Financial Health
DistressedDistressed · -3% CAGR over 4y
Location
HEATWORKS HEATING LTD
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsProvides installation, servicing and repair of gas and LPG boilers and central heating systems. Also offers powerflushing, air source heat pump installation, and boiler care plans and finance for…
Serves homeowners and residential customers in Southampton, Portsmouth and surrounding areas needing boiler, central heating and heat pump services.
Financial Health
StableStable · 0% CAGR over 2y
Location
HM2 Property Solutions Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides property maintenance, renovation and building services for residential properties, including extensions, kitchen and bathroom installations, plumbing, electrical work, heating and gas…
Serves residential homeowners across the South Coast needing property maintenance, renovations, extensions, kitchens, bathrooms, plumbing, electrics, heating and gas work.
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
PESTKILL LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides pest control and prevention services for residential and commercial properties, including treatment and management of rodents, bed bugs, flies, insects, moles and birds, as well as…
Serves both commercial and domestic clients, including households, businesses and facilities management customers in Southampton, London and the Southern Counties, with bird-related work offered…
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 3y
Location
MOSTLANE CONSTRUCTION LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides construction and building refurbishment services for commercial and residential projects, including design and build, property extensions and renovations. Also delivers facilities…
Serves commercial clients and domestic property owners across Southern England, including established companies needing building-related support and homeowners seeking residential property…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
Dynamic Electrical Solutions Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical design, installation and maintenance services for domestic, commercial and industrial projects. Services include wiring for new housing developments, EV charging point…
Serves a mix of B2C and B2B customers, including homeowners, new housing developers, commercial clients and industrial businesses. Also targets organisations needing renewable energy, EV charging,…
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 4y
Location
WHA ELECTRICAL SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for commercial, retail and industrial premises, including new-build and refurbishment electrical installations, fire alarm installation and reconfiguration,…
Serves B2B clients in the retail, commercial and industrial sectors, including organisations managing premises, refurbishments, new builds, inspections and multi-store rollout projects across the UK…
Financial Health
StableStable · -13% CAGR over 4y
Location
C.L.C. CONTRACTORS LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides property maintenance, repair and refurbishment services for public and commercial buildings. Services include responsive repairs, planned maintenance, fire safety and building compliance…
Serves public-sector and commercial property asset owners, including housing providers and landlords, schools, universities, healthcare estates, Ministry of Defence sites, utilities, rail…
Financial Health
StableStable · Hiring · 10% CAGR over 1y
Location
Olfm
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides refurbishment, fit-out and building maintenance services for residential, commercial, retail and hospitality properties. Delivers planned and reactive maintenance, renovations, M&E works,…
Serves B2B and public-sector clients across the UK, including residential property, commercial, retail, hospitality and industrial organisations, plus local government bodies and blue-chip clients…
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
Location
GEMINI ROOFING & CLADDING LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides roofing and cladding services for commercial, industrial and agricultural buildings, including cladding replacement, over‑cladding of existing roofs and walls, guttering, roof lighting…
Serves main contractors and direct clients responsible for commercial, industrial and agricultural buildings across the UK, including warehouses and other existing or new-build sites.
Financial Health
StrongStrong · Growing, Hiring · 28% CAGR over 4y
Location
Blue Ribbon Facilities Group Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial cleaning and facilities support services for offices, retail, hospitality, schools and industrial sites, including window cleaning, carpet and floor care, pressure washing,…
Serves businesses and public-sector premises in Hampshire, Dorset, Wiltshire, Sussex and Berkshire, including offices, pubs, restaurants, retail stores, warehouses, manufacturers, schools, nurseries,…
Financial Health
WeakWeak · -11% CAGR over 4y
Location
SELL & REPAIR IT LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical and gas services for domestic and commercial properties, including installations, rewiring, inspections, fault repairs, EV charging point installation, portable appliance testing,…
Serves homeowners, landlords with property portfolios, residential letting and estate agencies, and commercial/industrial clients across the South East and London, including offices, warehouses,…
Financial Health
WeakWeak
Location
KNIGHT CATERING SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsSupplies, installs, services and repairs commercial catering equipment including refrigeration, warewashing, gas and electrical appliances. Provides planned preventative maintenance, emergency…
Serves B2B commercial catering and hospitality operators in Southampton, Hampshire and Portsmouth, including restaurants, kitchens and other foodservice businesses that use gas, electrical,…
Financial Health
StableStable · -8% CAGR over 5y
Location
CEI ELECTRICAL SERVICES LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical, mechanical, and plumbing services including industrial, commercial, residential and marine electrical installations, heating and ventilation systems, gas and plumbing work,…
Serves local government bodies, schools, sports and civic facilities, private developers, defence organisations, builders, contractors, industrial and commercial businesses, plus domestic homeowners…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 2y
Location
R.F.A. CONTRACTORS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting, fire alarm and detection system design, installation and maintenance, and facilities maintenance services. Also undertakes building fabric repairs, refurbishments,…
Serves B2B and public sector customers, selling to commercial, industrial, retail, government, leisure and residential property operators needing facilities maintenance and minor works, particularly…
Financial Health
HealthyHealthy · -72% CAGR over 4y
Location
RFW Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides heating and electrical engineering services for domestic and commercial customers, including boiler installation, servicing and repairs, electrical installations, pipework and refurbishment…
Serves homeowners and landlords within 30 miles of Southampton and commercial organisations nationwide, including hospitality and retail chains such as restaurants, coffee shops, fast-food brands and…
Financial Health
HealthyHealthy · Growing, Hiring · 3% CAGR over 4y
Location
New Air Southern Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides installation, servicing and maintenance of air conditioning, refrigeration and ventilation systems for commercial, industrial and domestic buildings. Also conducts system design, equipment…
Serves commercial, industrial and domestic clients within a 70-mile radius of Southampton, including facilities teams and homeowners in areas such as Bournemouth, Portsmouth, Winchester and Salisbury.
Financial Health
StableStable · -4% CAGR over 4y
Location
SOLUTIONS WATER AND AIR MANAGEMENT LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides commercial heating and plumbing engineering services and water treatment, including installation, maintenance and servicing of heating systems and management of hot and cold water systems…
Serves commercial customers such as businesses, property managers and facilities teams across Hampshire, Dorset and the South Coast needing building services support.
Financial Health
WeakWeak · Hiring · 6% CAGR over 4y
Location
ALFORD PLUMBING & HEATING LTD,
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides plumbing and heating services including boiler installation, servicing and repairs, radiator and bathroom installation, landlord gas safety checks, power flushing, heating controls,…
Serves domestic homeowners, landlords and commercial property owners or managers in Southampton, Hampshire and surrounding areas.
Financial Health
StableStable · -75% CAGR over 3y
Location
FIREGUARD SERVICES (NM) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides fire protection services including fire risk assessments, installation and servicing of fire alarms, fire extinguishers and emergency lighting, supply of fire safety signage and equipment,…
Serves domestic and commercial customers in Central Southern England, including Hampshire, Dorset and South Wiltshire, plus owners and operators of pleasure craft and commercial vessels needing fire…
Financial Health
StableStable · -4% CAGR over 2y
Location
Smh Plumbing And Heating Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides plumbing and heating services including boiler installation and servicing, bathroom fitting, air source heat pump installation, landlord gas safety checks, and commercial plumbing and…
Serves domestic customers, landlords and commercial clients in Southampton and across the South, including homeowners and property owners needing plumbing, heating and gas safety support.
Financial Health
StrongStrong · Hiring · 6% CAGR over 3y
Location
POWERPOINT MECHANICAL & VENTILATION LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides electrical and mechanical contracting services including installation, maintenance and design‑and‑build solutions. Works on commercial, industrial and domestic projects such as schools,…
Serves commercial, industrial, public sector and domestic customers across Southern England, including contractors, local authorities, schools, hospitals, office blocks, warehouses, distribution…
Financial Health
HealthyHealthy · 0% CAGR over 1y
Location
LSB ELECTRICAL LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides electrical, plumbing and heating installation, maintenance and servicing for domestic and commercial properties. Services include rewiring, fuse box upgrades, lighting, CCTV and alarms,…
Serves domestic clients, landlords, main contractors, developers, management agents, and commercial, agricultural and retail businesses in Hampshire and Dorset.
Financial Health
StableStable · Hiring · 22% CAGR over 3y
Location
L W Gas Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides installation, servicing, and repair of gas, oil, and LPG boilers and heating systems. Offers central heating upgrades, radiator and smart control installation, boiler care plans, air…
Serves B2C homeowners and residential landlords in Southampton, Portsmouth and Hampshire needing boiler, central heating and gas safety support for gas, oil and LPG systems.
Financial Health
HealthyHealthy · Hiring · 2% CAGR over 4y
Location
Economy Heating Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides commercial heating and plumbing services including boiler room installation, boiler servicing, gas system repairs, and fabrication work. Gas Safe registered engineers manage and maintain…
Serves businesses, landlords and facilities or property managers responsible for commercial properties across the South Coast and Midlands, especially sites with boiler rooms and commercial heating…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
Our MEP Co. Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical, electrical and public health (MEP) building services including system design, installation and maintenance. Also offers design-stage consultancy, facilities management, and…
Serves property developers, contractors, building owners and facilities teams in Hampshire across commercial, hospitality, education, culture, assisted living, ports and high-end residential projects.
Financial Health
StrongStrong
Location
A.JUPES PLUMBING & HEATING SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and heating services for residential and commercial properties, including leak repairs, plumbing installations, bathroom and kitchen fitting, boiler installation and servicing,…
Serves homeowners, landlords and small businesses in Southampton, the New Forest and nearby Hampshire towns, including customers needing domestic or commercial plumbing, heating and gas safety…
Financial Health
WeakWeak · -4% CAGR over 4y
Location
ELECTRICAL & ELECTRONIC FIRE & SECURITY SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsInstalls, services and repairs electrical, fire and security systems including CCTV, access control, door entry, intercoms, intruder and fire alarms, automatic gates and barriers. Also provides…
Serves commercial, industrial and domestic customers, including property and block management companies, care and arts organisations, and technical industries across Hampshire, Dorset, Wiltshire,…
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
CRS PLUMBING AND HEATING SPECIALISTS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides domestic plumbing and heating services including emergency repairs, boiler and central heating installation and servicing, bathroom plumbing, water mains repairs, water softeners, underfloor…
Serves homeowners, landlords and property developers across Hampshire and the South Coast, including households and new-build housing developments needing plumbing and heating contractors.
Financial Health
WeakWeak · Hiring · 6% CAGR over 4y
Location
ACPOWERTECH LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including lighting installation, data cabling, fire alarms, security systems, and rewiring. Installs and maintains air conditioning, refrigeration, cold…
Serves commercial and industrial organisations, factories, offices and facilities managers, alongside residential homeowners, across Hampshire, Berkshire, Dorset, West Sussex, Wiltshire and the wider…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Mg Cavill & Co Services Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides electrical, mechanical and building services including plumbing, heating, wiring, lighting, security and fire systems installation. Installs renewable energy systems such as solar PV,…
Serves homeowners, commercial businesses and industrial clients needing building, electrical, mechanical, interiors, data infrastructure and renewable energy services, mainly in Hampshire, Wiltshire…
Financial Health
StrongStrong · Growing · 0% CAGR over 1y
Location
Abel Environmental Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsInstalls and maintains renewable energy and HVAC systems for domestic and commercial properties, including solar PV panels, battery storage, air conditioning, refrigeration, ventilation, and air or…
Serves homeowners and commercial customers across Hampshire and the south of England, including businesses, housebuilders and property developments needing energy, heating, cooling and maintenance…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
Location
R G N Electrical Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic and commercial properties, including new-build electrical installations, property rewiring, inspection and testing, and general electrical…
Serves B2C homeowners and B2B clients such as landlords, builders, property developers and commercial premises in New Forest, Southampton and surrounding areas, including domestic properties,…
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
Location
MELLOR HEATING & PLUMBING LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides residential and commercial plumbing and heating services, including installation, repair and servicing of gas and oil central heating systems, boilers and solar thermal hot water systems, as…
Serves residential homeowners and commercial premises operators across Hampshire, Dorset, Berkshire, Surrey, Sussex, Wiltshire and the Isle of Wight.
Financial Health
HealthyHealthy · -7% CAGR over 4y
Location
Roost Services Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsInstalls, services and repairs domestic gas boilers and heating systems. Provides boiler finance, maintenance plans and smart heating controls, and installs underfloor heating, heat pumps and air…
Serves homeowners and small commercial property customers in Winchester, Eastleigh, Southampton and surrounding Hampshire areas needing heating, boiler and related home comfort services.
Financial Health
HealthyHealthy · Hiring · 2% CAGR over 5y
Location
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How Southampton Trades companies work and how to sell to them
What they do
Revenue usually comes from labour, parts and managed subcontracting, with margins tied to engineer utilisation, travel time, first-time fix rates and how well materials are bought. Southampton trades firms typically price work as hourly call-outs, fixed quotes, day-rate site work, inspection visits, retained maintenance cover or term-service packages. Larger jobs may include design coordination, certification, project supervision and handover packs, but the underlying product is still physical work delivered on site. Cash collection can be uneven because emergency jobs, insurance work, contractor packages and public-sector maintenance all carry different approval and payment rhythms.
Who they sell to
Most sell to property managers, landlords, housing providers, facilities teams, construction contractors, commercial occupiers and council or public-estate teams. Smaller jobs are often approved by an owner, site manager or estates officer, while larger contracts tend to involve procurement, finance and health-and-safety reviewers as well as the operational buyer. Sales channels are mixed: repeat account management, local referrals, framework participation, tender portals and direct approaches to buildings with known maintenance needs. Buying cycles range from same-day reactive approval to slower tendered contracts where compliance evidence, insurances, accreditations, method statements and references matter.
What they buy
Most trades firms tend to spend on systems and services that help them keep mobile teams booked, compliant and paid. Common needs include job scheduling, route planning, quoting, invoicing, CRM, call handling, payment collection, document storage, asset records, mobile forms, time capture and management accounts. Compliance-led operators also buy training administration, certification support, health-and-safety advice, insurance, vehicle management, tool tracking and audit-ready reporting. As firms add office staff or take on multi-site accounts, they often need cleaner handovers between sales, dispatch, supervisors and finance, rather than another isolated spreadsheet or inbox-based process.
Why and how to sell to them
Trades buyers tend to evaluate suppliers when admin starts to constrain field capacity: missed appointments, slow quoting, disputed invoices, expired certificates, unclear job notes or too much time spent chasing engineers by phone. Other triggers include a new maintenance contract, a tender deadline, hiring additional engineers, taking on regulated work, opening a local depot or moving from owner-managed scheduling to a dedicated office team. Outbound angles should usually be practical and evidenced: fewer return visits, faster invoice approval, cleaner compliance packs, better labour allocation and less leakage between quote, job, parts and payment.
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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