Subcontractors in the UK

35585 UK companies working as subcontractors.

• O Onestop Safety Solutions Glasgow · Scaffolding

  Onestop Safety Solutions design, manufacture and install bespoke work at height safety systems and fall protection solutions across the UK.

• O OnFire Protection Ltd West Malling · Fire protection

  OnFire Protection Ltd specialises in bespoke fire sprinkler system design, installation, and maintenance across the UK, ensuring full compliance with

• O Onflo Plumbing & Heating Services Spennymoor · Plumbing · 1-9 employees

  Onflo is a family-run plumbing and heating company offering boiler installations, servicing, repairs, and full bathroom renovations across County Durh

• O Onit Building Services Ltd Northwood · Plumbing

  ONit Building Services offers emergency plumbers and electrical installation services in Northwood, Buckinghamshire. Reliable, efficient, and certifie

• O Onix Systems Hertfordshire · Electrical · 1-9 employees

  Onix Systems Ltd specialises in electrical safety inspections (EICR), testing, and EV charger installations for homes and businesses. Contact us on 01

• O Onkar Builders Slough · Main contractor · 1-9 employees

  Onkar Builders Ltd offers quality building, renovation, electrical, and heating/AC services across London and surrounding counties. Satisfaction guara

• O Online Flooring Contracts Ltd London · Flooring · 1-9 employees

  Online Flooring is a Commercial Flooring Contractor offering quality flooring installation and maintenance services throughout London, Kent and South

• O Only Living Ltd St. Leonards-On-Sea · Plumbing

  Friendly, local, and trusted plumbing and heating experts offering bathroom upgrades, boiler servicing, emergency repairs, and general plumbing servic

• O ONLYHEATING.COM Altens · Heating & ventilation · 10-49 employees

  ONLYHEATING.COM Ltd offers central heating, gas services & plumbing in Aberdeen, Inverurie & Stonehaven. Authorised & regulated by the FCA.

• O Onpoint Roofing And Guttering Ltd Hove · Roofing

  Onpoint Roofing and Guttering Ltd is a trusted provider of roofing and guttering services across the South Coast, including Brighton, Eastbourne, and

• O Onpoint Trading Ltd Bolton · Plumbing · 1-9 employees

  Onpoint Trading Ltd offers comprehensive plumbing services, including repairs, maintenance, new installations, and emergency call-outs. They also spec

• O ONSIDE ROOFING LTD Cheadle · Roofing

  Onside Roofing Ltd provides professional roofing services and repairs across Manchester, Stockport, the Peak District, and surrounding areas. Expertis

• O Onsite Construction Ltd London · Painting & decorating · 1-9 employees

  London Onside Construction provides a comprehensive range of building services, specializing in home extensions, loft conversions, and steel construct

• O Onsite Developments Design & Construction Ltd Wallington · Design & build · 1-9 employees

  Onsite Developments Design & Construction Ltd is a fast-growing construction, design and development business with 25 years of experience. We undertak

• O Onslow Roofing & Building Services Ltd Belfast · Roofing · 1-9 employees

  Trusted Belfast Roofers with over 30 years of experience. Offering reliable, fully insured roofing solutions and building services with award-winning

• O Ontime Contractors Ltd Nottingham · Main contractor · 1-9 employees

  Ontime Contractors Limited is a construction company operating across the UK, offering a wide range of services from new builds to renovations. They f

• O ONTIME ECO ENERGY SOLUTIONS LTD Stockport · Heating & ventilation · 1-9 employees

  Ontime energy solutions is a reputable engineering company providing comprehensive services to residential clients. With expertise in heating, cooling

• O Ontime Electrical Romford · Electrical

  Ontime Electrical: Your trusted partner for professional electrical services in Romford. Delivering safe, reliable, and efficient electrical solutions

• O Ontime Heating And Plumbing Ltd Birmingham · Plumbing · 1-9 employees

  Ontime Heating and Plumbing Ltd offers expert plumbing and heating services across Birmingham and the West Midlands. We handle everything from boiler

• O OnTime Plumbers Hainault · Plumbing

  OnTime Plumbers is a trusted London-based plumbing company offering 24/7 emergency services. Established in 2012, we provide fast, reliable, and affor

• O Ontop Electrical Ltd Nottingham · Electrical · 1-9 employees

  Ontop Electrical provides high-end bespoke electrical solutions for private, commercial and industrial clients across Nottinghamshire, Derbyshire and

• O ONTRACK ROOFING & BUILDING LTD Worcester · Roofing

  Ontrack Roofing & Building Ltd offers professional roofing solutions in Birmingham and surrounding areas, focusing on quality materials, skilled workm

• O ONUR DECORATION LIMITED Corby · Tiling · 1-9 employees

  Onur Decoration provides high-quality tiling, flooring, and painting & decorating services in Corby and Kettering. We guarantee customer satisfaction

• O Onyx Basement Services Ltd Aylesbury · Waterproofing

  Specialist waterproofing contractors in Domestic and Commercial buildings for London Birmingham, Cambridge, etc. - Onyx Basement Services London

• O Onyx Bespoke Joinery Liverpool · Carpentry & joinery

  Onyx Bespoke Joinery creates beautifully crafted, made-to-measure fitted furniture & cabinetry for homes and businesses-designed, built, and fitted wi

• O Onyx Civils Ltd Shaftesbury · Civil engineering · 10-49 employees

  Onyx Civils Limited is a groundworks and civil engineering company based in Dorset, operating as a main and principal contractor throughout the South

• O Onyx Fire Ltd London · Fire protection · 1-9 employees

  Onyx Fire Ltd provides passive fire protection services across Milton Keynes, Buckinghamshire, the Midlands and London. Trusted fire protection contra

• O Onyx Interiors Birmingham · Main contractor

  Onyx Interiors Facilities Management: Construction and roofing specialists offering turnkey solutions from concept to completion for industrial, comme

• O Onyx Plumbing Brentwood · Plumbing

  Onyx Plumbing Ltd offers Gas Safe registered plumbing, boiler, and heating services in South Essex. Established in 2009, they focus on quality workman

• O Onyx Solutions Ipswich · M&E contracting · 10-49 employees

  Onyx Solutions Ltd is a trusted provider of building and facilities services, delivering high-quality solutions across the region. Part of the EPPH Gr

• O Opal Access Group Newcastle Upon Tyne · Rail infrastructure · 1-9 employees

  Opal Access Limited delivers facilities management, maintenance, rope access, commercial cleaning, security, workwear, rail and renewables services ac

• O Opal Contracts Ltd Solihull · Security systems

  Opal Contracts Ltd is a West Midlands based supplier and installer of quality innovative blinds, curtain tracks and security systems, serving the comm

• O Opal Energy Ltd Oldham · Insulation · 1-9 employees

  Opal Energy provides government-funded energy-efficient home improvements, making homes warmer and greener. Specialising in insulation and heating con

• O OPAL PROPERTY MAINTENANCE LTD Rainham · Electrical

  Opal Property Maintenance offers multi-trade property maintenance services in London for agents, landlords, and property owners, covering electrical,

• O Opalux Group Ltd Gloucester · Electrical

  Opalux Group provides expert electrical, mechanical and construction services across Gloucestershire and The Cotswolds.

• O Opaque Decorators Willenhall · Painting & decorating · 10-49 employees

  Opaque Decorators offer professional commercial painting & decorating services across the UK. With over 30 years of experience, our accredited team de

• O Opel Electrical Services Ltd Congleton · Electrical · 1-9 employees

  Opel Electrical Services Ltd offers quality electrical services nationwide, specializing in fire alarm design and installations, domestic and commerci

• O Open Circuit Solutions Ltd Gosport · Electrical

  Reliable electrician in Gosport & Hampshire. Specialists in rewires, EV charger installation, fuse board upgrades and electrical fault finding.

• O Open Plan Renovation Colchester · Refurbishment

  Discover top-tier Open Plan Renovations with Open Plan Renovation Ltd in Colchester. Specializing in home extensions, loft conversions, and comprehens

• O Open Protocol Technology Kingswinford · Fire protection · 1-9 employees

  Open Protocol Technology Ltd specialises in the supply, installation and servicing of Fire and Security Systems, and offers Hydrostatic Testing of gas

• O Open Valley Roofing Ltd Slough · Roofing

  Open Valley Roofing Ltd offers professional roofing services in Berkshire and Greater London, specializing in repairs and replacements with a 3-year w

• O Opening Systems Ltd Leeds · Windows & doors

  Opening Systems installs, maintains & services automatic doors, aluminium shopfronts, steel security doors, and electric window openers across the UK.

• O Openings Direct Ltd Grantham · Security systems · 1-9 employees

  Openings Direct offers expert installation and service for automatic gates and garage doors, with over 30 years of experience. Serving Grantham and be

• O Operation Green Westcliff-On-Sea · Solar PV

  Solar, EV & battery installers in Southend, Essex, Cambridge & beyond. Affordable, trusted and ready to help.

• O OPR Plumbing Truro · Plumbing

  OPR Plumbing Ltd is a family-run plumbing company based in Mid Cornwall, offering reliable and professional plumbing services across the region with o

• O OPTAMA LTD Glasgow · Solar PV · 10-49 employees

  Optama Renewables is a leading renewable energy company in Scotland, specialising in sustainable heating and energy solutions like solar PV, heat pump

• O Optera Ltd Coventry · Damp proofing · 10-49 employees

  Optera are leading structural repair specialists, working in the domestic insurance sector. We pride ourselves on understanding our clients' needs and

• O Optical Lighting Ltd Edinburgh · Electrical · 1-9 employees

  Professional electricians providing a wide range of electrical and lighting services to domestic, commercial & industrial customers in Edinburgh, Glas

• O Optiflex Utilities Ltd Maidstone · Utilities

  Optiflex Utilities offers reliable infrastructure and support services tailored for telecommunications providers, ensuring efficient utility solutions

• O Optility Ltd Cradley Heath · Utilities · 10-49 employees

  Optility Limited delivers comprehensive infrastructure solutions across the UK, specializing in civil engineering, multi-utility projects, and telecom