Electrical main contractors in the UK

3973 UK main contractors offering electrical work.

• O ODM Services Gravesend · Heating & ventilation · 10-49 employees

  Award winning company delivering commercial heating, plumbing and mechanical projects across London and the South East.

• O Office4Garden London · Design & build

  Bespoke garden offices designed for productivity and built to last. We offer a stress-free, end-to-end service, delivering exceptional quality and fun

• O Ogival Ltd London · Refurbishment

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

• O Ojg Joinery & Construction Ltd Leeds · Carpentry & joinery

  OJG Joinery & Construction Ltd are reliable joinery and construction specialists in Leeds, offering a wide range of services for commercial and reside

• O Oldham Bros Ltd. Liverpool · Demolition · 1-9 employees

  Oldham Bros Ltd are trusted demolition contractors in Merseyside with over 75 years' experience. Specialists in demolition, site clearance, recycling,

• O Oliver Corbett Interiors Bristol · Kitchen fitting

  Expert kitchen and bathroom fitters in Bristol & Bath with 34 years of experience. All trades in-house, no subcontractors. Trusted by Grand Designs. F

• O Olver Electrical Contractors Ltd Callington · Electrical · 1-9 employees

  Olver Electrical Contractors Limited offer a broad range of electrical services to our increasing client base throughout the South West of England.

• O Olympia Projects Leeds · Design & build · 1-9 employees

  Olympia Projects Limited is an established, family-run commercial development business, delivering projects throughout the UK with over 55 years of ex

• O OLYMPUS BUILD LTD Dunstable · Main contractor · 1-9 employees

  Olympus Build Ltd offers new builds, extensions, and loft conversions with in-house architects and engineers. They cover Herts, Beds, Bucks, Northampt

• O Om Barker Builders Ltd Bagshot · Extensions

  OM Barker Builders Ltd is an experienced building company undertaking house extensions, garage conversions and more in Bagshot, Bracknell and the surr

• O Omega Electrical Contractors (Crt) Ltd Evesham · Electrical

  Leading electrical contractor in the Midlands, offering outstanding service at competitive prices. Certified technicians for residential and commercia

• O Omega Lofts Ltd Nottingham · Loft conversions · 1-9 employees

  Omega Lofts Limited specialises in loft conversions, home extensions, and fitted bathrooms/kitchens in Nottingham. Established in 2012, they offer pro

• O Omel Group Wembley · Extensions

  Omel Group offers comprehensive construction solutions across London and the South East, specializing in extensions, renovations, general construction

• 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 Bloomsbury Ltd London · Extensions

  One Bloomsbury is a London-based construction and building company offering bespoke design, construction, and maintenance services for residential and

• 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 Onkar Builders Slough · Main contractor

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

• 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 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 Onyx Solutions Ipswich · M&E contracting

  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 Opalux Group Ltd Gloucester · Electrical

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

• 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 Optimal Finishes Ltd Chigwell · Refurbishment · 1-9 employees

  Top Rated Construction Company in London. We offer Full Management on Projects our services include Full Home Renovations, Offices, Full Bathroom Fitt

• 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 Electrics Ltd Peterborough · Electrical

  Optimum Electrics is a leading UK solar and electrical company based in Peterborough, providing hassle-free solar and electrical services for commerci

• O Optimus Facilities Ltd Liverpool · M&E contracting

  Optimus Facilities: Your Building Services & Engineering Partner. Specialising in mechanical & electrical systems design and installation across the N

• O Opus Building Services Ltd Boldon · M&E contracting · 50-249 employees

  OPUS Building Services Ltd is a leading contractor of mechanical, electrical and building services across a wide range of sectors throughout the UK. F

• O Opus Construction And Civils Ltd Birmingham · Main contractor

  Opus Construction and Civils Ltd are a specialist construction company operating in the insurance repair sector on complex projects.

• O Opus Utility Solutions Warrington · Utilities · 10-49 employees

  Opus Utility Solutions is a Tier 1 SME delivering civil & electrical engineering solutions in the utilities sector, supporting DNOs and IDNOs around t

• O Orange Construction Coventry Ltd Coventry · Refurbishment

  Orange Construction Coventry Ltd is a construction company specialising in home renovations, new builds, extensions, and a wide range of property impr

• O Orange Electrical Contractors Ltd Walsall · Electrical

  Trusted West Midlands electrical contractors delivering innovative design and build solutions for commercial and residential projects. Reliable, effic

• O Orange Grove Construction Ltd Hengoed · Extensions · 1-9 employees

  Orange Grove Construction is a highly regarded construction firm in Hengoed with over 30 years of experience, known for craftsmanship, effective commu

• O Ordon Ltd Dartford · Main contractor · 1-9 employees

  Ordon Ltd is a building contractor based in London, focused on providing high-quality service and customer satisfaction. They offer a range of service

• O Origin Electrical And Mechanical Services Ltd Ossett · Electrical

  Expert electrical and mechanical services for residential and commercial clients across the UK. Committed to quality, safety, and innovation.

• O Oriole Constructors Ltd. London · Refurbishment · 1-9 employees

  Oriole Constructors Ltd offers quality, time, and cost control in building and construction projects across Bracknell and West London.

• O Orton Group Halesowen · Electrical · 10-49 employees

  Orton Group is a leading UK provider of Electrical, Mechanical, and Maintenance Services, recognised with the Contractor of the Year award.

• O Orton Group Halesowen · Electrical

  Leading UK Electrical, Mechanical and Maintenance Services provider, delivering high-quality service on time and on budget for complex projects.

• O Osborne Carpentry & Construction Ltd Billingshurst · Carpentry & joinery · 1-9 employees

  Osborne Carpentry & Construction Ltd is a family-run business with attention to detail and customer satisfaction at its core. We project manage your d

• O Otisbum Ltd Sunderland · Main contractor

  Otisbum Engineering & Construction Company Ltd offers high-quality building, renovation, maintenance, and engineering solutions for residential, comme

• 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 Our Mep Co. Ltd Fareham · M&E contracting

  Expert MEP design, installation & maintenance in Hampshire. Delivering quality, efficiency & energy-saving solutions for your building project. Get in

• O Our Space Ltd Waterlooville · Main contractor · 1-9 employees

  Our Space Ltd is a trusted main contractor for construction, groundworks & landscaping for homeowners and the public sector across Hampshire.

• O Outside In Garden Rooms Glasgow · Design & build

  Outside In Garden Rooms designs, builds and installs bespoke, insulated, and sustainable garden rooms and modular buildings in Scotland.

• O Overbecks Office Solutions Hassocks · Fit-out & interiors

  Complete office refurbishment and office interior design services, logistical move management and build services across the UK and Europe.

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

  OVK Construction offers Building and Maintenance services: Interior and Exterior renovation, Plumbing and Electrics, Extensions, Loft Conversions and

• O Owen & Palmer Ltd Bangor · Electrical

  Leading industrial electrical contractor servicing North & Mid Wales, managing installations, construction and facilities for complete solutions and a

• O Ownz Maintenance Ltd Leicester · Refurbishment

  Tradespeople you can trust for high-quality property maintenance services. We focus on trust, competence, and integrity in every residential and comme

• O Oxbow Electrical Ltd Woodbridge · Electrical · 1-9 employees

  Oxbow Electrical Ltd are trusted local electricians covering Suffolk, Norfolk, and Essex. We provide high-quality electrical services for domestic, co

• O Oxenton Builders Ltd Evesham · Main contractor

  Oxenton Builders is a traditional building contractor specialising in traditional and contemporary builds and renovations in Cheltenham, Evesham and T

• O Oxford Home Reno Oxford · Refurbishment

  Oxford Home Renovation offers expert home renovation, roofing, and renewable energy solutions. Specializing in sustainable and energy-efficient option