Construction companies in London

12659 construction companies across London.

• G Gardsec Fire & Security Middlesex · Security systems

  Gardsec Fire & Security specialises in the design, installation, repair and maintenance of intruder alarms, fire alarms, access control, door entry an

• G Garhigh (Southern) Ltd Croydon · Roofing · 10-49 employees

  Garhigh (Southern) Ltd are roofers with over 40 years experience, providing roofing services in Croydon, Surrey, Essex, Kent, London, East and West Su

• G Garhigh (Waterproofing) Ltd Croydon · Fit-out & interiors

  Garhigh (Waterproofing) Ltd is a fit-out & interiors company based in Croydon, registered at Companies House in 2017.

• G Garner Advanced Ltd London · Air conditioning · 1-9 employees

  Garner Advanced Limited specialises in planned maintenance and ancillary services for blue-chip companies, property owners, and landlords across the U

• G Garrett Decorating Ltd Woodford Green · Painting & decorating

  Garrett Decorating offers professional painting and decorating services, focusing on quality finishes and excellent customer service. They serve resid

• G Garrison Locksmiths London · Security systems

  Garrison Locksmiths: Trusted local locksmiths specialising in emergency lockouts, uPVC doors, and eviction services. Available 24/7.

• G Garrolux London · Windows & doors

  Garrolux Ltd is an independent garage door company with over 30 years' experience. We supply and install roller shutter, up-and-over, and sectional ga

• G Gartenart Swimming Ponds London · Swimming pools

  Gartenart Swimming Ponds are the UK's leading swimming pond & natural pool provider, offering specialist design, construction, and maintenance service

• G Garwood Glazing Contractors Ltd Woodford Green · Glazing · 1-9 employees

  Garwood Glazing Contractors Ltd is a growing family-run business offering domestic and commercial glazing services, from traditional methods to modern

• G Gary'S Construction Ltd Hayes · Civil engineering · 50-249 employees

  Gary's Construction offers a wide range of utility contracting services across London and the South East, including maintenance, capital delivery prog

• G Gas Aid Plumbing & Heating Ltd Wembley · Plumbing

  Gas Aid Plumbing & Heating LTD is your trusted Gas, Plumbing & Heating Engineer. Contact us for updates, promotions, and more.

• G Gas and Heating Pro London · Heating & ventilation

  Gas & Heating Pro: Your trusted commercial gas engineer in London. Quality services for businesses.

• G Gas Boiler & Heating Repair Ltd Bromley · Heating & ventilation

  Expert boiler installation, replacement, service, repair, and diagnostic services in London by certified local Gas Safe engineers. Comprehensive centr

• G Gas Care Plus London · Plumbing

  Your trusted local plumbing and heating experts with 20+ years' experience. Gas Safe certified engineers for quality and reliability.

• G Gas Certify Ltd London · Electrical

  Gas Certify offers certified gas safety certificates, boiler servicing, EICR checks, and landlord compliance services in London. Book online with tran

• G Gas First Ltd London · Heating & ventilation

  Gas Safe registered engineers in East London for boiler repair, servicing, gas safety certificates & emergency call-outs. Fast, reliable service for h

• G Gas Flo Wembley · Heating & ventilation

  Gas Flo is your local gas and boiler installation, servicing and maintenance service provider for both residential and commercial sectors in London an

• G Gas Flow & Plumbing Ltd Waltham Cross · Plumbing

  Gas Flow & Plumbing Ltd offers emergency boiler repair, burst pipe, and plumbing services across London and Hertfordshire. Gas Safe registered enginee

• G Gas Flow 4U London · Plumbing

  Gas Flow 4U offers Gas Safe registered plumbing and heating services across London, specializing in boiler installations, repairs, servicing, and land

• G Gas Heating Ltd London · Property developer

  Gas Heating Ltd is a property developer company based in London, registered at Companies House in 2025.

• G Gas Inspections Ltd London · Plumbing

  Gas Inspections Ltd is a plumbing company based in London, registered at Companies House in 2023.

• G Gas Ray London · Plumbing

  Gas Ray provides domestic gas, plumbing, and heating services in London. As a family-owned business, they offer expert advice and reliable service for

• G Gas Tech Heating LTD Watford · Heating & ventilation

  Trusted boiler and heat pump specialists in Hertfordshire. Gas Safe and MCS certified engineers offering installations, servicing, repairs, and heatin

• G Gas Weiss Plumbing & Heating Ltd London · Plumbing

  Gas Weiss Plumbing & Heating offers expert boiler installations, repairs, servicing, and Gas Safe certification across London. We provide emergency pl

• G Gas2o Ltd Lower Morden · Plumbing · 1-9 employees

  Gas2o Ltd offers commercial and domestic Heating and Plumbing services in Surrey and London. They specialize in commercial fit out, boiler installatio

• G Gascade Plumbing and Heating Gravesend · Plumbing

  Gascade is a leading plumbing and heating business with over two decades of expertise. We offer efficient, reliable, and sustainable solutions for hom

• G Gascore Plumbing & Heating Ltd Banstead · Plumbing · 1-9 employees

  Gascore Plumbing & Heating offers boiler installations, breakdowns, servicing, powerflushing, underfloor heating, and general plumbing services across

• G Gaslords Ltd London · Plumbing

  GASLORDS 24/7 EMERGENCY PLUMBERS: friendly and dependable plumbing and gas engineering experts in Kentish Town, serving London. Gas Safe registered sp

• G Gassafetyexperts Ltd Thornton Heath · Plumbing

  Gas Safety Experts offers comprehensive plumbing, heating, and gas safety certification services across London and the UK. We provide 24/7 emergency r

• G Gastom Ltd Barnet · Plumbing

  Gastom Plumbing & Heating provides expert plumbing, heating, and ventilation services across North London. Our Gas Safe registered engineers are skill

• G Gaston Plumbing Ltd Watford · Plumbing

  Gaston Plumbing Ltd are Watford's leak detection specialists, providing non-invasive leak detection, hidden water leak investigations and expert plumb

• G Gastra Ltd London · Plumbing

  GASTRA offers expert gas, heating, and plumbing services to keep your home safe and comfortable year-round. Our experienced team is dedicated to quali

• G Gastrax Gas & Heating Ltd Epsom · Heating & ventilation

  Gas Safe heating and plumbing engineers based in Epsom, serving Surrey. Boiler installation from £1625 + VAT, repairs, servicing and general plumbing.

• G GASWAVE PLUMBING & HEATING LTD London · Plumbing

  GasWave offers 24/7 emergency plumbing, heating, and boiler repair services across Greater London and Essex, guaranteeing a 1-2 hour response time.

• G Gate Control Ltd Harrow · Security systems

  Gate Control designs, installs and services electric gates, driveway gates, security gates and access control systems across Hertfordshire, Bedfordshi

• G Gatehouse Architectural London · Steel fabrication

  Expert architectural metalwork services for industrial & commercial spaces, specialising in balustrades, balconies, and staircases. Design, manufactur

• G Gateway Construction Services Ltd Tilbury · Rail infrastructure · 10-49 employees

  Gateway Construction Services Limited is a specialist rail services company based in Tilbury, Essex, providing construction and maintenance within the

• G Gaudi Construction Ltd Uxbridge · Refurbishment

  Gaudi Construction are South West London's dominant House Extension with 10 Year Warranty! From Bespoke design we are Loft Conversion Specialists

• G Gavacan (Ascot) Ltd Pinner · Main contractor

  Gavacan (Ascot) Ltd is a main contractor company based in Pinner, registered at Companies House in 2024.

• G Gavacan (Rickmansworth) Ltd Pinner · Main contractor

  Gavacan (Rickmansworth) Ltd is a main contractor company based in Pinner, registered at Companies House in 2025.

• G Gavacan Homes Pinner · Property developer

  The residential property developer with a mission to create the perfect living space for its clients. Outstanding homes built with passion.

• G Gavacan Property Ltd Pinner · Main contractor

  Gavacan Property Ltd is a main contractor company based in Pinner, registered at Companies House in 2025.

• G Gaw Build Ltd London · Main contractor · 1-9 employees

  GAW Build Ltd offers expert construction and renovation services, specializing in new builds, complete home renovations, certified electrical, and plu

• G Gawron Build Ltd London · Design & build · 1-9 employees

  Elevate your living space with London's experts in bespoke residential extensions and premium loft conversions. Our master craftsmen deliver exception

• G GAZONE Ilford · Main contractor

  GAZONE is your UK destination for quality mobile phones, gadgets, and technology products. We offer reliable devices at competitive prices with excell

• G Gb Aluminium & Glazing Ltd London · Cladding

  GB Aluminium is a UK-based architectural aluminium systems specialist, offering design, manufacture, and installation of doors, windows, sliding syste

• G Gb Cosey Homes Ltd London · Painting & decorating

  Professional home improvement services across the UK. Clear advice, careful workmanship and reliable specialists you can trust in your home.

• G Gb London Properties Ltd Hayes · Main contractor · 1-9 employees

  GB London Properties is a reliable construction company with many years of industry experience, delivering high-quality building services for resident

• G Gb Rope Access Techs Ltd Bexley · Glazing

  GB Rope Access Techs are IRATA trained window cleaning and rope access specialists in London. Expert abseil, reach & wash, and cradle window cleaning,

• G Gb Specialist Access Solutions Ltd London · Scaffolding

  Rope access specialists offering a range of installation, construction, fall protection and cleaning services. IRATA-trained.