Public construction companies

6443 UK companies working in the public sector.

• 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 Open Ecx Ltd Manchester · Insulation

  Automate invoicing, ordering and statement reconciliation with 100% accuracy. An accredited Peppol Access Point connecting 17,000+ trading parties.

• O Open Protocol Technology Kingswinford · Fire protection

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

• 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 Opening The Book Ltd Pontefract · Carpentry & joinery

  Opening the Book designs library interiors and provides reader development services, focusing on reader-centred thinking and audience development for

• O Openview Security Solutions Ltd Essex · Electrical · 250+ employees

  Preqin is a leading provider of data, insights, and analytics for the alternative assets industry, empowering professionals to make informed investmen

• O Optima Consult Ltd Mansfield · Design & build

  Optima Consult offers top-tier consultancy services in Project Management and Facilities Management, providing bespoke, integrated solutions for capit

• O Optima Contracting Ltd High Wycombe · Glazing · 250+ employees

  Enhance your workspace with modern glass partitions and office solutions from Optima Systems. Transform your office environment today!

• O Optimum Bid Services London · Property developer · 1-9 employees

  Optimum Bid Services is a UK-based bid and tender writing consultancy, specialising in helping construction contractors win public and private sector

• O Optimum Scaffolding Ltd Alcester · Scaffolding

  Trusted NASC Scaffold contractor in Birmingham. Offering expert commercial scaffolding services & scaffold tower hire in Birmingham & the surrounding

• O Optimus Access Ltd Gravesend · Scaffolding · 10-49 employees

  Optimus Access Limited is an established scaffolding contractor with over 15 years of experience delivering complex access solutions across the UK con

• O Optimus Architectural Ltd Newark · Glazing · 10-49 employees

  Designing with vision, building with precision. Excellence in Architectural Glazing. Commercial and residential construction projects across the UK.

• 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 Optosmart Ltd London · Solar PV

  OptoSmart provides modular smart poles and IoT-ready street lighting ecosystems for UK municipalities and developers, focusing on zero carbon footprin

• O Opus Pro Audio Ltd Burnley · Electrical

  Opus Pro Audio provides site surveys, design, installations, spare parts, and maintenance contracts for sound and lighting systems. They serve various

• O Ora Asbestos Management Ltd Great Wakering · Asbestos removal

  Ora Asbestos Management offers professional and experienced asbestos surveying, inspections, and removal services. Family-run and compliant with CAR 2

• O Orange Property Brighton · Main contractor · 10-49 employees

  Orange Property is a construction and property services company focused on delivering exceptional service and building long-term relationships. They o

• O Orbit Scaffolding Ltd Leeds · Scaffolding

  Orbit Scaffolding Limited is an experienced and professional independent scaffolding company based in Leeds, West Yorkshire, dedicated to providing un

• O Orby Investment Belfast · Main contractor · 1-9 employees

  Orby Investment is a leading construction company in Northern Ireland, offering high quality property solutions across all sectors including social, p

• O Orestone Basingstoke · Fire protection · 10-49 employees

  Orestone - a safer, smarter future - A Highly Accredited Integrator of Fire, Evacuation, Assisted Living & Safety Systems.

• O Original Roofing Company Ltd Blaenau Ffestiniog · Roofing

  Original Roofing Company, based in Blaenau Ffestiniog, specialises in slate roofing and conservation. They offer innovative solutions like the Stormfl

• O Orion Building Engineering Services Ltd Hemel Hempstead · Heating & ventilation

  Orion Building Engineering Services offers a comprehensive range of building maintenance and engineering services, including heating, ventilation, ele

• O Ornate Interiors Ltd Pudsey Leeds · Plastering

  Ornate Interiors Ltd is a specialist in fibrous plaster mouldings, offering manufacturing and installation services. They serve theatres, architects,

• O Orostream International Contracts Ltd East Sussex · Main contractor · 10-49 employees

  Global specialists in secure environment construction, fit-out & refurbishment. Over 40 years of experience providing specialised building solutions t

• O Orton Lifts & Escalators Ltd Welwyn Garden City · Lifts & escalators · 10-49 employees

  Orton Lifts & Escalators Ltd is a key labour resource supplier to major UK lift and escalator companies, offering consultancy, installation, maintenan

• O Orus Technical Services Ltd Hemel Hempstead · Security systems

  ORUS Technical Services provides integrated security and electrical solutions, including fire protection, CCTV, access control, intruder alarms, and e

• O OSCAR CLEANING SERVICES LTD London · Painting & decorating

  Bespoke commercial cleaning for London offices and schools since 2014. On-site supervision, vetted teams, eco-friendly methods. Book a free site visit

• O OSL Global Crewe · Rail infrastructure · 50-249 employees

  OSL Global provides optimised engineering and consultancy services for rail systems, water treatment, waste management, and AI integration, delivering

• O Oswestry Scaffolding Ltd Shropshire · Scaffolding

  Oswestry Scaffolding Ltd is a family-run business providing scaffolding services for over 25 years to domestic, commercial, industrial and public sect

• O Otero Door Specialists Tonbridge · Windows & doors · 1-9 employees

  Trusted specialists in roller shutters, aluminium doors & door closers. Quality service & installation across Kent.

• O Otlantic Ltd Bournemouth · Painting & decorating · 1-9 employees

  Building Services Contractors supplying qualified, skilled workers to the construction and development industry across London and the South East.

• O Our Lady Of Grace Parish Buildings Preservation Trust Ltd London · Restoration & heritage

  Preserving exceptional heritage buildings and building vibrant community outreach programmes.

• 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 Outdoor Carpets Newton Abbot · Flooring

  Outdoor Carpets supply and fit synthetic sports surfaces, specialising in all-weather tennis courts and Multi-Use Games Areas (MUGAS) across the UK.

• O Outdoor Schemes Ltd Maidstone · Landscaping

  Outdoor Schemes creates engaging, practical, and inclusive outdoor play spaces for schools, nurseries, councils, and community groups across the UK.

• O Outersight (UK) Ltd Plymouth · Security systems

  Specialist remote CCTV, wildlife observation and research, and harsh environment CCTV solutions. Bringing the outside in with innovative technical sol

• O Ovenden Allworks Ltd Canterbury · Civil engineering

  Ovenden Allworks is a family-owned construction company based in Kent, specialising in civil engineering, groundworks, earthmoving, and surfacing. Wit

• O Overhall Contractors Ltd North Lincolnshire · Civil engineering · 50-249 employees

  Overhall Contractors is a family-run civil engineering and groundwork contractor based in North Lincolnshire, with over 30 years of experience deliver

• O Ovi Construction Ltd Romford · Civil engineering · 1-9 employees

  OVI Construction Company Limited is a Nigerian-based multidisciplinary construction and engineering company delivering end-to-end infrastructure solut

• 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 Owen Construction Consultancy Ltd Orpington · Main contractor

  Construction Health & Safety Consultants offering services in London, Kent & Essex. Experienced consultants ensure safe and compliant projects.

• O Owen Pell Ltd Hereford · Main contractor · 10-49 employees

  Owen Pell is a construction and civil engineering contractor established in 1976, serving Herefordshire and surrounding counties. They offer a wide ra

• O Owl Carpentry Ltd Ely · Carpentry & joinery

  Expert carpentry and joinery services in Cambridgeshire. Specialising in bespoke woodwork, restoration for listed buildings, and new build projects. Q

• O Owlsworth Conservation Ltd Reading · Restoration & heritage · 10-49 employees

  Specialist building conservation contractors, skilled in joinery, lime plastering, brickwork, flintwork, blacksmithing, and project management for his

• O Owlsworth Construction Ltd Reading · Restoration & heritage · 1-9 employees

  Owlsworth Conservation Specialist Building Conservation Contractors, Skilled In Joinery, Lime Plastering, Brickwork, Flintwork, Blacksmith, Project Ma

• O Owlsworth Ltd Reading · Restoration & heritage · 10-49 employees

  Owlsworth Conservation Specialist Building Conservation Contractors, Skilled In Joinery, Lime Plastering, Brickwork, Flintwork, Blacksmith, Project Ma

• O OX SCAFFOLD LTD Kidlington · Scaffolding

  Ox Scaffold Ltd provides top-quality scaffolding services for domestic, commercial, and events projects. Offering safety, professionalism, and afforda

• O Oxford Carpentry & Fire Doors Oxford · Carpentry & joinery

  Oxford Carpentry & Fire Doors offers professional carpentry and certified fire door services across Oxfordshire and the South East. BM Trada accredite

• O Oxford City Housing (Development) Ltd Oxford · Property developer

  Oxford City Housing (Development) Limited is a company focused on housing development in Oxford, operating under the governance of Oxford City Council