Subcontractors in London

3197 construction subcontractors based in and around London.

• N Novozhylov Ltd London · Carpentry & joinery · 1-9 employees

  NOVOZHYLOV LIMITED offers professional carpentry and construction services in the UK, specializing in residential and small commercial projects. Servi

• N Novus Construction Ltd London · Refurbishment · 1-9 employees

  High-end residential refurbishments, extensions and new builds across London and the Home Counties, plus specialist carpentry and fit-out for main con

• N NS ELECTRICAL MAINTENANCE SERVICES LTD London · Electrical

  NS Electrical Maintenance Service Ltd offers 24/7 professional electrical and security services across Greater London for residential and commercial c

• N NuColour London · Fire protection

  NuColour delivers intumescent fire protection, specialist coatings and surface restoration services, combining technical expertise, compliance, and co

• N Nuova Plumbing Ltd London · Plumbing

  Nuova Plumbing Ltd offers high-standard, professional, and quick response plumbing and heating services across East & South East London and Kent. Esta

• N NUVO MEP LTD London · M&E contracting

  Nuvo MEP is a client-oriented company providing a rich variety of Mechanical and Electrical services to all-sized enterprises, working on Britain's co

• N NW Cleaning and Maintenance Ltd London · Refurbishment

  NW Cleaning & Maintenance Ltd provides expert cleaning and maintenance services in London. Specializing in residential and commercial properties, we e

• N Nw Heating Ltd London · Heating & ventilation

  NW Heating offers expert boiler installation, heating, and emergency plumbing services in London. Gas Safe registered team available 24/7 for installa

• N NXT Level Group London · Design & build

  NXT Level Group designs, supplies, and installs bespoke mezzanine floors, racking, and fit-out solutions for businesses across Kent, Essex, Sussex, an

• N Nyxion Ltd London · Electrical

  Electrical and smart-home contractor for architects. RIBA-aware, M&E coordinated, NICEIC, KNX and Rako certified. London and across the UK.

• O O & K Property Works Ltd London · Design & build · 1-9 employees

  London design & build specialists since 2007. Extensions, lofts, renovations, new builds, plus MCS-certified heat pumps and solar PV. Fixed quotes.

• O O N Interiors Ltd London · Refurbishment · 1-9 employees

  O N Interiors Ltd offers personalized, client-centric building and renovation services, utilizing experienced professionals and premium materials for

• O O-Zone Construction Ltd London · Fire protection

  O-Zone Construction provides construction, fire protection and trade labour supply services in London. We are industry-leading passive fire protection

• O O'Hagan Civils Ltd London · Civil engineering

  O'Hagan Civils Ltd is an experienced civil engineering contractor working across the UK in the rail and construction industries. Specialising in indus

• O O&V Painting Ltd London · Painting & decorating

  Leading and Innovating in the Painting and Decorating Industry. Bring new life to your home or business with the trusted team at O&V Painting LTD. We

• O Oak Leaf Building Projects Ltd London · Refurbishment · 1-9 employees

  Oak Leaf Building Projects delivers high-end residential refurbishment, structural works and extensions across London, scoped in writing and priced li

• O Oakbuild Ltd London · Main contractor

  Oakbuild Ltd is a trusted Ontario construction company specializing in commercial and residential construction and high-quality renovations built on c

• O Oakhill Construction Ltd London · Refurbishment · 1-9 employees

  Oakhill Construction Ltd is a London-based construction company with over 20 years of experience in residential and commercial properties. Specialisin

• O Oakmark Ltd London · Shopfitting

  Oak Mark specialises in bespoke furniture and custom shop fitting for residential and commercial clients in London and the South East. We design, buil

• O Oakwood Plant Group London · Plant hire · 50-249 employees

  Oakwood Plant Group offers waste management, demolition, recycling, and plant hire across London and the South East. Family-run since 1964.

• O Oasis Heating & Plumbing Ltd London · Plumbing

  Oasis Heating & Plumbing offers professional heating and plumbing services for residential and commercial clients. Established in 2005, we provide rel

• O Obsidian Roofing LTD London · Roofing

  Trusted London roofing specialists offering expert roof repairs and installations. Family-run business with 15+ years of experience. Free quotes and 2

• 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

  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

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

• O OHM & SAFE ELECTRICAL LTD London · Electrical

  Ohm & Safe Electrical are trusted domestic electricians in South London & Surrey, specialising in high-quality electrical work for homeowners. Service

• O Oilcanfinish Outdoor Living London · Fencing

  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

  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

  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

  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