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Trades Companies in Cardiff: 3,174 Active Firms (2026)
Trades companies in Cardiff deliver installation, repair, maintenance and building services across the city and surrounding metropolitan area.
Buying centres tend to sit in facilities management, property maintenance, housing repairs, mechanical and electrical works, and compliance-led installation. Buyers range from residential customers to commercial property teams, construction contractors and public-sector site managers, with procurement styles spanning phone-led response jobs, quoted works and tendered service agreements. The operational common ground is field coordination: mobile teams, job allocation, certification, van stock, risk assessments and evidence of competence. Engagements can be small domestic repairs, repeat maintenance rounds or subcontract packages on commercial and regulated sites, so credibility often depends on response discipline as much as trade capability.
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Cardiff has 3,174 actively trading trades companies, making the local cohort broad but mostly small by turnover. Only 45 firms sit above £5M reported turnover, while 792 were incorporated since 2022, so the list combines long-running contractors with a sizeable recent-formation layer. Reported employment totals 1,961 people. For researchers, the shape is less like a small set of national contractors and more like a fragmented field-services base: specialist trades, reactive maintenance providers and building-services subcontractors competing for residential, commercial and public-sector work across Cardiff and South Wales.
Field services and trades sit across varied regimes rather than under a universal sector licence. Building control, competence duties, self-certification schemes and role-specific registrations all matter, depending on the job. Building Safety Regulator guidance for England covers client, designer and contractor duties under amended Building Regulations; GOV.UK also describes competent person schemes for installers who can self-certify certain building work. Gas work is narrower: businesses and engineers must be on the Gas Safe Register to carry it out legally. Cardiff contractors therefore operate in a market where paperwork sits close to delivery: certificates, site records, renewal diaries and evidence of competence tend to affect scheduling, tendering and subcontractor choice.
Cardiff’s trades market appears likely to remain fragmented, with owner-managed contractors and specialist subcontractors carrying much of the service capacity. Buyers tend to value availability, certification discipline and clean handover paperwork, especially where works touch regulated buildings, facilities contracts or safety-critical systems. Newer firms may find room in responsive repair and specialist compliance niches, but moving beyond the local-contracting model usually requires supervisors, documented processes and enough back-office capacity to handle tenders. Consolidation may come through facilities managers and building-services groups absorbing dependable subcontractors, rather than through a broad wave of venture-style scaling.
3,174
Active firms
2026
45
Above £5M turnover
Cardiff-area firms
792
New since 2022
Incorporated firms
Key facts
About 1% of the trading cohort reports turnover above £5M (45 of 3,174 firms) — the rest sits below that revenue band.
24% of the cohort was incorporated since 2022 (792 firms), so a sizeable share is in its first few filing cycles.
Gas work is a defined regulatory boundary: 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.
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.
Building Safety Regulator guidance under the Building Regulations etc. (Amendment) (England) Regulations 2023 sets duties for clients, designers and contractors, with higher-risk buildings including those with at least 7 storeys or at least 18 metres high.
ONS reports that construction new work in Great Britain increased by 1.4% in current prices in 2024, while construction new orders rose 5.6%.
FIEC says EU construction investment fell by over 2% in 2024, while civil engineering was expected to grow by 5.8%.
Top Cardiff Trades companies
BPS Facilities Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides commercial property maintenance and engineering services, including plumbing, gas heating, boilers, air conditioning and ventilation, electrical installation and testing, roofing works, and…
Serves businesses, commercial property owners and industrial companies across Wales, South West England and the M4 Corridor, spanning varied sectors needing facilities and property support.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 2y
Location
SOLVIT (WALES) LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides commercial, domestic and industrial gas, heating and plumbing services, including boiler and heating installations, maintenance and repairs, bathroom and washroom design and fitting, water…
Serves domestic, commercial and industrial customers across South Wales and the West, including local authorities, private sector companies, local businesses, universities, medical centres, care…
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 5y
Location
INNOV8 FACILITIES MANAGEMENT LTD
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides facilities management services for commercial, industrial and residential properties, including security guarding and CCTV, fire stopping and fire door work, planned and reactive building…
Serves businesses in commercial and industrial sectors, plus residential customers, across South and South West Wales and England. Buyers include property/site managers and homeowners needing…
Financial Health
DistressedDistressed · -16% CAGR over 3y
Location
CMB West Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides engineering contracting services including mechanical and electrical installation, facilities management, maintenance, pre-construction support, cleanroom and process installation. Manages…
Serves B2B project owners, main contractors and facility managers across Wales and the UK, particularly in industrial, cleanroom, semiconductor, renewables and commercial facilities sectors.
Financial Health
WeakWeak · -5% CAGR over 4y
Location
Evans Electrical Holdings Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides electrical engineering services including design, installation, testing, commissioning and maintenance of electrical systems. Also installs renewables, EV chargers, solar, lighting, fire and…
Serves building contractors and property developers across Wales and the West, including projects in education, healthcare, commercial, residential, industrial, logistics, sports and leisure sectors.
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 2y
Location
ACTION AIRCONDITIONING LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides installation, maintenance, repair and emergency call‑out services for air conditioning and refrigeration systems. Engineers install new units, service existing equipment, diagnose faults and…
Sells primarily to businesses needing air conditioning and refrigeration support, including food-industry organisations such as charities, retailers and manufacturers, as well as other commercial…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
Orion TS Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including design, installation and maintenance of electrical systems. Offers EICR inspections, structured cabling, commercial solar installations, EV charging…
Serves businesses, landlords, homeowners and public-sector organisations across South Wales and the UK, including retail, healthcare, education, HMO and commercial property clients.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
FAST FIRE & SECURITY TECHNOLOGIES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides fire safety and security services including fire risk assessments, fire door inspections, fire alarm systems, fire extinguisher supply and maintenance, fire safety training, CCTV…
Serves businesses and property managers in South Wales and South West England needing contracted fire safety and security support for commercial premises.
Financial Health
StrongStrong
Location
CARDIFF SCAFFOLDING CONTRACTS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides scaffolding erection and access solutions for construction, refurbishment and maintenance projects. Offers scaffold design with CAD drawings, installation and dismantling, safety tagging…
Serves construction firms, tradespeople, industrial and commercial clients, and private individuals with domestic projects, primarily across South Wales, with coverage extending to Wales and England.
Financial Health
HealthyHealthy · -70% CAGR over 4y
Location
RED DRAGON GROUP LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides facilities management services including commercial cleaning, security services, building maintenance and compliance testing. Also offers window cleaning, grounds maintenance, plumbing, air…
Serves commercial clients across South Wales and South West England, including offices, energy companies, production businesses, playgroups and organisations needing outsourced facilities, cleaning…
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
TS Heating & Bathrooms Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides plumbing and heating services including boiler installation, servicing and repairs, gas engineering and power flushing. Designs and installs bathrooms, wet rooms and kitchens, and carries…
Sells to homeowners and residential property customers needing plumbing, heating, boiler, gas, bathroom and kitchen installation services, mainly in Cardiff, Penarth, Barry, Newport and the wider…
Financial Health
StableStable · -11% CAGR over 2y
Location
CJS Electrical (Wales) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including design, installation, maintenance and testing of electrical and data systems. Installs EV charging points, fire and security systems, and renewable…
Sells to households and business customers in Wales, including commercial and industrial sites. Serves homeowners, offices, factories and other premises needing electrical, data, fire and security,…
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 4y
Location
FJ Lowery & Son Roofing Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides residential and commercial roofing services including re-roofing, roof repairs, leak repairs, roof tiling, insulation work, and installation of roof windows such as Velux, along with…
Serves homeowners, landlords and commercial property owners in Cardiff needing roofing support for residential and commercial properties.
Financial Health
StableStable · Hiring · 11% CAGR over 4y
Location
Coad Electrical Cardiff Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services including installation, maintenance and repair of electrical systems for residential and commercial properties, covering wiring, lighting, consumer units, and…
Serves local customers in Cardiff and surrounding areas with electrical needs.
Financial Health
StableStable · Hiring · 12% CAGR over 2y
Location
Precision Roofing South Wales Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides roofing services for residential and commercial properties, including installation of pitched and flat roofs, new roof construction, roof repairs, slating, roofline and guttering work,…
Serves domestic homeowners and commercial property customers in Cardiff and across South Wales with roofing-related maintenance, repair, replacement and loft conversion needs.
Financial Health
StableStable · Hiring · 7% CAGR over 5y
Location
N J Harkus Plumbing and Heating Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and heating services including boiler installation, servicing and repair, bathroom fitting, central heating systems, gas fire work, landlord gas safety certificates, leak detection,…
Serves domestic customers, landlords and property managers needing plumbing, heating and gas services in Cardiff and surrounding areas, including emergency enquiries and general repair or…
Financial Health
HealthyHealthy · -7% CAGR over 4y
Location
ROBINSON BUILDING AND SURVEYING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential building and renovation services including home extensions, loft and barn conversions, kitchen and bathroom installation, and landscaping and driveways. Manages construction…
Serves homeowners and residential property owners across South Wales, including clients planning home improvements and those needing insurance-approved building work.
Financial Health
WeakWeak · -5% CAGR over 4y
Location
Vencer Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential construction and design-and-build services including home extensions, renovations, loft conversions and new-build houses. Also undertakes commercial building projects and manages…
Serves homeowners and domestic property owners in Cardiff and South Wales, alongside businesses needing commercial building projects.
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
Location
G.T. Jones Contracting Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides site clearance, fencing installation, civil engineering works, and plant and machinery hire. Also installs underground cables and pipes using cable ploughing, and undertakes landscaping,…
Serves public and private sector clients, including infrastructure and construction project owners, utilities installing underground cables or pipes, developers, agricultural landowners, and…
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
SUPACLEEN LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides commercial cleaning services including office cleaning, window and carpet cleaning, exterior and bio-hazard cleaning, computer cleaning, and waste removal and recycling. Also offers…
Serves businesses and property organisations in Cardiff and South Wales, including offices, housing associations, extra care schemes, medical centres, schools, churches, car dealerships, healthcare…
Financial Health
WeakWeak · -7% CAGR over 5y
Location
E.J. Facilities Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides property maintenance and repair services for residential and commercial buildings, including routine maintenance, planned upkeep, and reactive repairs to maintain building condition and…
Serves homeowners and businesses needing property maintenance support, with a stated focus on customers across South Wales and the West.
Financial Health
WeakWeak · -60% CAGR over 1y
Location
AJW CONSTRUCTION (WALES) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential building and renovation services including home extensions, loft and garage conversions, kitchen and bathroom installation, landscaping, garden rooms, HMO conversions, and…
Serves homeowners, landlords and commercial property owners in Cardiff and surrounding areas, including clients planning home improvements, HMO conversions and property maintenance.
Financial Health
StableStable · Hiring · 7% CAGR over 4y
Location
M R M & SONS BUILDING & ROOFING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building and roofing services including residential extensions, house construction and property maintenance. Also offers industrial and commercial concrete pumping, concrete installation and…
Serves both B2B and B2C customers, including industrial and commercial property owners, facilities managers, and residential homeowners seeking extensions, house builds, roofing, and concrete…
Financial Health
StableStable · -7% CAGR over 4y
Location
CARDIFF ELITE DEVELOPMENTS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential building and renovation services including home extensions, loft and garage conversions, refurbishments, structural works and demolition. Also undertakes carpentry, kitchen and…
Serves homeowners, landlords and local property owners in Cardiff and surrounding areas seeking building work, refurbishments, extensions, conversions and property maintenance.
Financial Health
WeakWeak · -68% CAGR over 4y
Location
Laurel Landscapes (UK) Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides landscape construction and maintenance services, including hard and soft landscaping, sports and play area installation, and grounds maintenance. Works on projects such as school grounds and…
Serves schools and other organisations in Wales and South West England needing landscaping, sports/play facilities and grounds maintenance projects, from small works to larger contracts.
Financial Health
StrongStrong · Growing · 2% CAGR over 4y
Location
Bailey Building and Roofing Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides residential roofing and building services, including roof installation and repairs, chimney stack repairs and rebuilds, guttering, leadwork, slating and tiling, flat roofing systems,…
Serves homeowners and residential property owners in Cardiff and surrounding areas, including clients planning renovations, extensions or loft conversions and those responding to property survey…
Financial Health
WeakWeak · -14% CAGR over 4y
Location
Blue Breeze Cleaning Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial cleaning services including office cleaning, carpet and upholstery cleaning, and disinfection. Serves workplaces such as restaurants, retail premises, schools, gyms, hotels, and…
Serves businesses and organisations in Cardiff, including offices, dental surgeries, restaurants, pubs, retail premises, health and fitness clubs, schools, nurseries, communal areas, hotels and guest…
Financial Health
StableStable · Hiring · 18% CAGR over 4y
Location
MARTEL CLEANING LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides commercial cleaning services for businesses, including contract office cleaning, builders’ cleans, factory and warehouse cleaning, kitchen and carpet cleaning, and sanitation services for…
Serves businesses and organisations across Cardiff, South Wales, the South West and M4 corridor, including offices, retailers, warehouses, factories, hospitality venues, restaurants, schools,…
Financial Health
DistressedDistressed · -81% CAGR over 3y
Location
WHITEHEAD BUILDING SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical building services including system design, installation, refurbishment and ongoing maintenance. Works on commercial, education, healthcare and industrial projects,…
Serves public and private sector building owners, developers and main contractors across South Wales and South West England, including education, healthcare, life sciences, distribution, student…
Financial Health
HealthyHealthy · -1% CAGR over 4y
Location
RIVERSIDE INDUSTRIAL EQUIPMENT LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical engineering services for commercial facilities, including air conditioning, heating, plumbing, ventilation and steel fabrication, alongside electrical distribution,…
Serves businesses and public-sector organisations across South Wales and beyond, including industrial sites, large employers and estates/facilities teams needing mechanical, electrical and compliance…
Financial Health
StableStable · -2% CAGR over 2y
Location
TOLLGATE ENGINEERING SERVICES LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides design, installation and maintenance of electrical and mechanical building services, including HVAC, gas, heating, ventilation, lighting, power distribution, and fire and security systems…
Serves commercial property developers, education and healthcare organisations, housing associations, PRS/student accommodation developers, and industrial clients including data centres, manufacturers…
Financial Health
StrongStrong · Growing, Hiring · 62% CAGR over 2y
Location
Westlink Mechanical Services Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides plumbing, heating and mechanical building services for commercial construction projects, including system design, planning, installation and maintenance. Also delivers ventilation systems,…
Serves B2B clients in commercial construction, including main contractors, healthcare trusts, project managers and facilities teams, plus some domestic maintenance customers across South Wales and…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 3y
Location
Efs Systems (Holdings) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services including commercial, industrial and domestic installations. Installs solar PV systems, EV charging infrastructure, intruder alarms, CCTV, fire detection…
Serves commercial and industrial organisations, SMEs, public-sector estates such as NHS hospitals, and domestic homeowners; targets customers in South Wales and business clients across the UK.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Advanced Electrical Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic, commercial and industrial projects, including installation, maintenance and testing. Also designs and installs solar photovoltaic systems, fire…
Serves domestic customers, commercial organisations and industrial clients across South Wales and the UK, including companies with premises and project-based electrical, mechanical, fire-safety,…
Financial Health
StableStable · -4% CAGR over 4y
Location
Property Building Maintenance (Wales) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides building maintenance, refurbishment and construction services, including new builds, extensions and property conversions. Delivers reactive and planned maintenance, accessibility…
Serves residential, commercial, healthcare, heritage, education and energy sector clients, including housing providers and property managers with property portfolios and project sites.
Financial Health
HealthyHealthy · Growing, Hiring · 10% CAGR over 2y
Location
Lightning Solutions (Wales) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including installations, full rewires, electrical testing, compliance inspections, lighting upgrades, and power systems. Delivers reactive maintenance,…
Serves B2B and public-sector buyers, especially local authorities, housing associations, commercial businesses and industrial organisations. Targets contracted clients needing large-scale…
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
SCOTT FPS LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides fire protection services including supply, installation, servicing and maintenance of fire safety equipment. Offers products such as fire extinguishers, hose reels, fire blankets, alarms,…
Serves businesses and organisations in Cardiff, South Wales and the West that need workplace fire safety compliance, including buyers responsible for protecting premises, staff and assets.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
DALE BUILDING MAINTENANCE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides property maintenance services for commercial clients, including reactive facilities maintenance, minor building works and refurbishments, and insurance restoration and repair following…
Serves blue-chip commercial clients across multiple sectors and leading insurance companies, with customers located across South Wales and the south of England.
Financial Health
HealthyHealthy · -68% CAGR over 4y
Location
Tim O'Brien (Newport) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical contracting services and renewable energy installations, including solar PV, battery storage and EV charging systems, for commercial, social housing, local…
Serves commercial clients, social housing providers, local authorities, education bodies and construction firms in South Wales and South West England.
Financial Health
StableStable · 0% CAGR over 2y
Location
Green Property Solutions Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides property maintenance and building services for domestic and commercial properties, including plumbing, electrical work, gas servicing and repairs, landscaping, external cleaning, property…
Serves domestic homeowners, landlords and commercial property owners or managers across South Wales and the M4 Corridor, from Pembrokeshire to Swindon.
Financial Health
StableStable · 4% CAGR over 2y
Location
HIGHLAND ELECTRIX (BRIDGEND) LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides construction, mechanical and electrical contracting services, including plumbing, heating and ventilation installation, electrical systems, CCTV and fire alarms, EV charger and solar…
Sells to commercial and industrial clients, businesses needing building services, security and electrical work, plus homeowners undertaking self-builds, extensions, solar or EV charger installations,…
Financial Health
DistressedDistressed · -6% CAGR over 2y
Location
IAN WILLIAMS CARPENTRY LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides bespoke carpentry and joinery services for construction projects, delivering supply-and-fix carpentry packages for commercial and residential developments. Work includes installation of fire…
Serves main contractors, developers and public sector clients in Wales and South West England, across health, education, housing, high-rise residential, student accommodation, retail, leisure,…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
Building Energy Management & Control (Cardiff) Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDesigns, installs and commissions building energy management and building management systems (BMS) for commercial, domestic and public sector buildings. Provides BMS panel building, software…
Serves commercial property operators, domestic customers and council buildings in South Wales, with a particular focus on commercial organisations managing buildings or multiple sites.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 3y
Location
B. Speck & Sons Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic and commercial properties, including full rewiring, electrical inspection and testing, consumer unit upgrades, installation of smoke detectors,…
Serves B2C homeowners and B2B clients including new-build housing developers, housing associations, housebuilders, and commercial or industrial organisations across South Wales, covering domestic…
Financial Health
StableStable · Hiring · 12% CAGR over 4y
Location
M. Camilleri & Sons Roofing Limited
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides roofing contracting services including slate and tile roof installation, shingling, leadwork, and single‑ply flat roofing. Undertakes new build and refurbishment roofing projects for…
Serves private householders, large UK housebuilders, building contractors and public-sector clients across Wales and South West England, including commercial, education, care, medical, leisure,…
Financial Health
StableStable · 2% CAGR over 1y
Location
AMBERWELL MAINTENANCE SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and mechanical engineering services including design, supply, installation, testing and maintenance of building systems. Works on LV distribution, lighting, fire alarms, security…
Serves public sector and commercial clients in Wales, including NHS health boards, local authorities, education providers, offices, factories, warehouses and manufacturing facilities.
Financial Health
StableStable · 0% CAGR over 4y
Location
Radecarl Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides property maintenance and facilities services for commercial, domestic and industrial buildings, including planned and reactive maintenance, ductwork and extraction system work, fire door…
Serves commercial, industrial and domestic property owners, landlords and facilities managers across South Wales and the West, including businesses, industrial sites and homeowners.
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
Location
SOUTH WALES MAINTENANCE AND ENGINEERING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical engineering services for commercial and industrial clients, including site maintenance, machining and manufacture, pipework and ductwork, welding and fabrication,…
Serves B2B commercial and industrial organisations across South Wales and the UK, including facilities, construction and operations teams.
Financial Health
StableStable · -9% CAGR over 4y
Location
Flair Electrical Engineering Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic, commercial and industrial properties, including EV charger installation, lighting, rewiring, electrical inspections, PAT testing, fault finding…
Serves domestic customers, landlords, commercial property owners and industrial clients across South Wales and surrounding areas, taking on both small and large projects.
Financial Health
WeakWeak · -7% CAGR over 4y
Location
CATERTECH SERVICES LIMITED
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsSupplies, installs and services commercial catering and refrigeration equipment for professional kitchens. Provides equipment sales, bespoke kitchen layout planning, breakdown repairs, and scheduled…
Serves businesses and organisations operating commercial kitchens in South Wales, including catering and hospitality operators needing equipment sales, servicing, repairs and maintenance.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 5y
Location
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How Cardiff Trades companies work and how to sell to them
What they do
Many Cardiff trades firms earn revenue from labour, materials handling and compliance paperwork rather than from a single product line. Pricing typically blends call-out fees, hourly or day rates, fixed-price quoted works, schedule-of-rates jobs and subcontract packages. Larger maintenance relationships may use retained service agreements, planned inspection rounds or reactive response cover, with margin shaped by travel time, van utilisation, rework and materials availability. Compliance-led work is often sold through recurring inspection, remediation and certificate renewal, not just installation. The service shape is operationally physical: qualified workers, vehicles, tools, stock control, site records and customer evidence all sit inside the commercial offer.
Who they sell to
Customer ownership usually sits close to the building or asset being maintained. Domestic and landlord work is often phone-, referral- or local-search-led, with the buyer looking for availability, price clarity and trust. Commercial work tends to involve property managers, estates teams, contract managers, surveyors, health and safety leads, procurement officers and principal contractors. Public-sector and regulated-site work is more likely to move through approved supplier lists, framework routes, tenders or subcontract pre-qualification. Sales cycles vary accordingly: emergency repair decisions can be near-immediate, while planned maintenance, multi-site contracts and compliance packages usually require site visits, documentation, references and insurance checks.
What they buy
Most trades firms tend to spend on tools that keep mobile work under control: scheduling, job management, quoting, route planning, mobile forms, time capture, customer messaging and photo evidence. Finance systems matter because margins can leak through unbilled extras, delayed invoices, disputed variations and weak job costing. Compliance and back-office needs include document storage, certification workflows, health and safety support, insurance, training, payroll, pensions, HR advice and bookkeeping. Operational spend also covers vans, fuel, telematics, trade counters, plant hire, PPE, waste handling, stock management and recruitment. Firms moving into larger commercial work may add bid support, accreditation advice and contract review.
Why and how to sell to them
Commercial intent often appears when a contractor wins a maintenance contract, takes on supervisors, expands from domestic jobs into commercial sites, or starts tendering for regulated work. Pain points are practical: missed appointments, paper certificates, unclear job profitability, late payment, duplicated admin, van downtime and shortages of qualified labour. Outbound angles tend to work better when tied to these frictions rather than abstract efficiency claims. Sellers should frame value around fewer return visits, faster quote-to-invoice cycles, cleaner audit trails, steadier utilisation and easier proof of competence. Cardiff trades buyers may be cautious, so evidence from comparable field-service operators is usually more useful than broad sector claims.
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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Frequently asked questions
How many trades companies are there in Cardiff?
What counts as a trades company in this list?
Which are the largest trades companies in Cardiff?
What do trades companies in Cardiff actually do?
How does Cardiff trades compare internationally?
How is this list built and how fresh is the data?
How big are the typical trades companies in Cardiff?
Are these mostly new or established trades companies?
What SIC codes does this use?
What buying signals should I look for?
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