Consultants in the UK

4872 UK companies working as consultants.

• O On-Site Archaeology Ltd North Yorkshire · Restoration & heritage

  On-Site Archaeology, established in 1997 in York, offers archaeological services for construction and development, from consultancy to excavation, sup

• O ONE 2 ONE ENVIRONMENTAL LIMITED Beverley · Asbestos removal

  One2One Environmental provides expert asbestos surveys, testing, and removal services across the UK. Certified professionals offering fast, compliant

• O One Environmental Ltd Witham · M&E contracting · 10-49 employees

  ONE Environmental Ltd provides compliance and mechanical services including PPM, reactive, and project works across various market sectors. They focus

• O ONE31 ENERGY LTD London · Solar PV

  ONE31 ENERGY LTD is a renewable energy company focused on reducing costs, cutting carbon, and building a sustainable future through innovative energy

• O OneMedical Property Otley · Property developer · 1-9 employees

  OneMedical Property designs, invests in, manages, and develops NHS healthcare properties across the UK, creating bespoke and innovative healthcare pre

• O Onemore Pro Ltd Harlow · Main contractor

  ONEMORE PRO LTD offers customized digital marketing strategies including SEO, social media, and content creation to boost brand visibility and drive b

• O ONJ Construction Management Westcliff-On-Sea · Main contractor

  ONJ Construction Management is a project management company linking customers with high-quality, precisely managed tradesmen to deliver hassle-free pr

• O OnPoint TRAC St. Helens · Rail infrastructure · 1-9 employees

  OnPoint TRAC is a multi-skilled organisation providing training and labour supply to the civil, construction, plant, machinery and rail sectors across

• O ONSHORE TECHNICAL LTD London · Utilities

  Onshore Technical: Experts in gas sector recruitment, temp-to-perm contracts, design consultation, and project management.

• O Onsite Building Control Ltd Bedford · Fit-out & interiors

  OnSite Building Control Ltd provides Approved Inspector services, ensuring projects comply with building regulations. They offer professional, diligen

• O Onya Management Services Ltd Shropshire · Concrete works · 1-9 employees

  Onya Management Services Limited (OMSL) offers specialist consultancy services for project management, focusing on cost and schedule control within th

• O Onyx Fire Ltd London · Fire protection

  Onyx Fire Ltd provides passive fire protection services across Milton Keynes, Buckinghamshire, the Midlands and London. Trusted fire protection contra

• 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 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 Opm Procurement Ltd Bedworth · Civil engineering · 1-9 employees

  Construction Procurement Specialists. Building Materials, Concrete, Aggregates, Muck Away, Plant Hire, Materials Procurement.

• O Optera Ltd Coventry · Damp proofing · 10-49 employees

  Optera are leading structural repair specialists, working in the domestic insurance sector. We pride ourselves on understanding our clients' needs and

• O OPTIESTIMATES London · Main contractor

  OptiEstimates offers expert quantity surveying and construction consultancy services in the UK and USA. With over 1000 completed projects, we provide

• 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 Optimal Energy Solutions Ltd Grays · Solar PV

  Optimal Energy Solutions specialises in designing and installing solar PV systems, solar battery storage, air source heat pumps, and EV charging solut

• O OPTIMAL RENEWABLES LIMITED Stirling · Heating & ventilation

  Expert heat pump installers in Central Scotland, specialising in air source and ground source heat pumps for homes and businesses. MCS-certified profe

• 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 Maintenance Solutions Ltd London · Electrical

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

• 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 Optivolt Solutions Ltd London · Electrical

  Optivolt Solutions Limited provides specialist training in AI, digital skills, automation, IoT, and smart technologies, alongside electrical NVQ compe

• O Opus Land Ltd London · Property developer · 1-9 employees

  Opus Land is an established real estate company with a successful track record of developing and investing in property across the UK for over 25 years

• 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 Oracle Electrical Biggleswade · Electrical

  Oracle Electrical offers bespoke domestic, commercial, and industrial electrical solutions, including design, installation, and maintenance. Based in

• O Oracle Energy Ltd Callington · Solar PV · 1-9 employees

  Oracle Energy specializes in solar PV installations for industrial, commercial, and residential clients. Offering tailored energy solutions to reduce

• O Orbis EV Stafford · EV charging

  Orbis EV specialises in the installation and support of electric vehicle charging points, offering advice for domestic and commercial clients. They ar

• O ORDERLY LONDON LTD Wokingham · Refurbishment

  Orderly London specialises in design-led renovations, extensions and full refurbishments for period and characterful homes across South West London an

• O Ordtek Ltd Norfolk · Civil engineering

  Ordtek specializes in UXO risk assessment, clearance support & geoscience services worldwide, trusted by infrastructure, energy & construction project

• O Origin Cladding Ltd London · Cladding · 1-9 employees

  Origin Cladding Limited supplies decorative wall cladding products and construction materials, including brick slips, clay bricks, and stone cladding.

• 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 Orion Lifting Solutions Ltd London · Crane hire

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

• 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 Ortus Energy Ltd London · Solar PV

  End to end Renewable Energy suppliers and funding solutions for commercial and industrial businesses with a proven track record.

• O OSADARE LIMITED Bristol · Civil engineering · 1-9 employees

  Expert project bidding, skilled staff placement, and professional development opportunities across offshore, nuclear, aerospace, and industrial mega p

• O Oscar Onsite London · Insulation

  Oscar Onsite offers independent cavity wall insulation surveys and reports for homeowners, landlords, and lenders across the UK. Book a survey today.

• 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 Osmonds Timber Ltd Uckfield · Timber frame · 1-9 employees

  Osmonds Timber Limited: Importers and distributors of high-quality timber products, specialising in Oak from sustainable French forests. Over 10 years

• O Osmose Hudderfield · Utilities

  Osmose Utilities Services provides solutions for T&D networks, focusing on asset preservation, structural resiliency, and data-driven decision-making

• O Osprey Tunnels Ltd Perth · Design & build

  Osprey Tunnels specialises in advanced polytunnels, greenhouses, and integrated growing systems. They offer turnkey solutions for various horticultura

• 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 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 RIVERS (NORFOLK) LTD Newport · Drainage

  Our Rivers provides FREE Septic Tank Upgrades in Norfolk and Cumbria in association with trusted local experts to help restore local ecosystems and wa

• 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 Oval Surveyors Ltd London · Restoration & heritage

  Oval Surveyors provides expert property surveying services, including condition reports, homebuyer reports, building surveys, expert witness reports,

• O Ovic Ltd Skipton · Marine & water engineering

  Ovic Limited are water engineering specialists based in Skipton, North Yorkshire, offering services in asset surveys, systems analysis, and hydraulic