Subcontractors in London

3168 construction subcontractors based in and around London.

• O OCE Electrical LTD London · Electrical

  OCE Electrical Ltd is a family-run electrical services company based in Caddington, serving Bedfordshire, Hertfordshire, and Buckinghamshire. Founded

• O Ocean Construction Services Ltd London · Main contractor · 1-9 employees

  Ocean Construction Services Ltd offers quality building, engineering, and renovation services across the UK, specializing in residential, commercial,

• O Octagon Shopfitting & Building Services London · Shopfitting · 1-9 employees

  Octagon Ltd offers shopfitting, bespoke joinery, and fire door services in London and nationwide. Part of The Octagon Group of Companies.

• O OD CREATE London · Fit-out & interiors · 10-49 employees

  Award-winning office fit-out company delivering both turnkey design and build projects and traditional fit-out contracts.

• O ODC Glass London · Glazing · 50-249 employees

  ODC Glass specialises in high-quality aluminium bifold and sliding glass doors, windows, roof lights and glazing systems for residential and commercia

• O Ogb Projects Ltd London · Refurbishment · 1-9 employees

  OGB Projects offers expert refurbishment services for residential and commercial properties in London, specializing in high-end bathroom fitting and m

• O Oggy Builder Ltd London · Kitchen fitting · 1-9 employees

  Oggy Builders delivers reliable building and renovation services, including kitchens, bathrooms, extensions, and landscaping. Trusted craftsmanship wi

• O Ogival Ltd London · Refurbishment · 10-49 employees

  Ogival offers professional property modifications and alterations, including refurbishments, basements, extensions, and loft conversions. With a desig

• O Oilcanfinish Outdoor Living London · Fencing · 1-9 employees

  Wimbledon Composite Decking Company specialising in Trex & Millboard. Outdure Aluminium Decking Frame Installer. Inlite Installer.

• O Old School Roofing Ltd London · Roofing

  Old School Roofing Ltd offers authentic, reliable roofing services with over 25 years of experience. Specialising in new roofs, repairs, and flat roof

• O Ols T Construction Ltd London · Drylining · 1-9 employees

  OLS T Construction offers professional construction services with hands-on expertise in London, specializing in high-quality finishing trades and refu

• O Omega Facade Ltd London · Cladding · 1-9 employees

  Omega Facade Ltd offers top-notch construction services in London and Greater London, specialising in facades, cladding, and brick slips. Established

• O Omega Facades U.K Ltd London · Cladding

  Omega Façades is a specialist in the design, supply and installation of complete façade systems across the UK, including cladding, curtain walling, an

• O OMEGA FIX London · Air conditioning

  Omega Fix provides expert air conditioning repair, installation, and maintenance services along with commercial refrigeration solutions across all 34

• O Omfc Ltd London · Main contractor · 1-9 employees

  OMFC Ltd is a construction company based in London, undertaking a variety of projects across residential and commercial sectors. They focus on deliver

• O Omikon Construction Ltd London · Design & build

  Omikon Construction Limited is a London-based construction company offering quality, reliable, and sustainable services. We combine innovation and exp

• O OMNIA GLAZING LTD London · Glazing · 1-9 employees

  Omnia Glazing Solutions offers bespoke glazing solutions for residential and commercial projects, specializing in Crittall, Cortizo, and Smart Systems

• O Omniscience Care Ltd London · Main contractor · 10-49 employees

  Omniscience Care is a specialist partner in complex built-environment projects, aligning design, safety, and commercial outcomes for resilient, high-p

• O OMNYRA London · Main contractor

  OMNYRA provides execution-led leadership for high-risk industrial projects, shutdowns, and major hazard environments, restoring authority and control.

• O On Point Building & Joinery London · Main contractor · 1-9 employees

  On Point Building & Joinery Ltd offers expert building and joinery services in Blackpool and the North West. Quality craftsmanship for every project,

• O ON POINT PLUMBING London · Plumbing · 1-9 employees

  Trusted local plumbing and heating experts in Ealing and West London. Qualified, experienced, and insured for all your plumbing and heating needs, inc

• O On Time Builders Ltd London · Refurbishment · 1-9 employees

  Ontime Builders Ltd specialises in high-end full refurbishment, renovation, bathrooms, kitchens, painting, decorating, plumbing, electrical repairs, e

• O ONE CALL HVAC LTD London · Heating & ventilation

  Trusted local HVAC installation, repair, and maintenance services across all 32 London boroughs. Licensed, insured engineers with upfront pricing and

• O One Click Centre Limited London · Bathroom fitting · 1-9 employees

  Expert bathroom fitters offering seamless renovation services including showers, plumbing, electricity, underfloor heating, wallpapering, painting, an

• O OneProtect London · Heating & ventilation

  OneProtect offers boiler, central heating, and plumbing cover plans for homeowners and landlords, providing 24/7 support and specialist engineers for

• 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 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 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 Optimal Heating & Cooling London · Heating & ventilation · 1-9 employees

  Gas, heating & air conditioning engineers for homes and businesses across the West Midlands & nationwide. Installations, servicing, repairs.

• O Optimal Property Maintenance London · Refurbishment · 1-9 employees

  Optimal Property Maintenance offers a comprehensive range of property maintenance services, including refurbishment, painting, roofing, electrical, an

• O Optimum Maintenance Solutions Ltd London · Electrical · 1-9 employees

  Optimum Maintenance Solutions LTD offers comprehensive electrical, mechanical, and automation maintenance services for manufacturing and process indus

• O Opuluxe Building And Damp Solutions Ltd London · Damp proofing

  A family run building and damp proofing company covering South London and Kent. Professional, dependable, and known for high-quality solutions.

• O Orama Contracts London · Main contractor · 1-9 employees

  Orama Contracts is a construction recruitment and subcontracting firm, part of the Orama Group, offering flexible workforce solutions and trade packag

• O Orange Eco Roofing Ltd London · Roofing

  Roof overcladding and roofing services for homes and businesses. Extend roof life, improve energy efficiency and reduce disruption with Orange Eco Roo

• O Ori Electrical Ltd London · Electrical · 1-9 employees

  Ori Electrical Ltd is a professional electrical services company offering installations, repairs, maintenance, and upgrades for residential and commer

• O Oriel Glass Ltd London · Glazing

  Oriel Glass: Experts in bespoke glazing solutions, offering exquisite windows, seamless sliding doors, and stunning structural glazing. Precision craf

• O Original Sash London · Windows & doors · 1-9 employees

  Original Sash by Sollex Ltd. manufacture, supply and install high quality timber windows & doors across London and the South East. Suitable for conser

• O Orion Lifting Solutions Ltd London · Crane hire · 1-9 employees

  Orion Lifting Solutions is a leading provider of lifting management solutions, bringing technical expertise to construction plans to improve efficienc

• O Ostconstruct1 Ltd London · Bricklaying

  Serious craftsmanship, fair prices, fast completion. Specialists in brickwork, masonry, extensions and exterior works for residential and commercial p

• O Otter Stop London · Fencing · 1-9 employees

  Otter Stop provides long-term otter fence solutions to protect fisheries and wildfowl lakes from otter predation. They offer tailored fencing and advi

• O Otters Group Ltd London · Refurbishment · 1-9 employees

  Otters Group is a family-owned construction business established in 2018, providing expert residential and commercial services including renovations,

• O Outlook Roofing Ltd London · Roofing

  Outlook Roofing Ltd specialises in UPVC, roof repairs, new roofs, rubber, felt, and GRP fibreglass flat roofs in London.

• O OVIDIU PREMIER JOINERY & CARPENTRY LTD London · Shopfitting · 1-9 employees

  Ovidiu are a premium shopfitting and carpentry company who have worked with the biggest clients in Mayfair, Bond Street in London, and throughout the

• O OXFORDROOFERS LTD London · Roofing

  Oxford Roofers provides roof repairs, roof maintenance and new roof installations across Oxford & Oxfordshire. Fully insured. Free quotes. Call or req

• O Oytas UK London · Civil engineering · 1-9 employees

  Oytas UK is the London branch of Oytas Construction, established in Turkey in 1992. Leveraging 30 years of experience, we specialise in concrete, pref

• O Ozone Buildworld Ltd London · Plumbing · 1-9 employees

  Ozonebuildworld Ltd offers premium property maintenance services across the UK, including plumbing, electrical, carpentry, and painting. Contact us fo

• P P & C Builders Brothers Ltd London · Refurbishment · 1-9 employees

  London based P&C Builders Brothers Ltd specialise in maximising home space with loft conversions, extensions & renovations, offering expert Italian-st

• P P C GLOBAL SOLUTION London · Insulation · 1-9 employees

  PC GLOBAL SOLUTION LTD offers insulation, rendering, pest control, cleaning, and decontamination services for residential and commercial clients. Spec

• P P Dymott Plumbing & Heating Ltd London · Plumbing · 1-9 employees

  P Dymott Plumbing & Heating Ltd offers boiler repairs, central heating installations, and bathroom design services in Ealing and surrounding areas. Co

• P P H Glazing Solutions Ltd London · Glazing · 1-9 employees

  P H Glazing Solutions Limited offers double glazing installation with over 10 years of experience. Family-run business providing comprehensive guidanc