Infrastructure construction companies in London

975 companies across London working in the infrastructure sector.

• N Nahal Construction Ltd Gravesend · Groundworks · 10-49 employees

  Nahal Construction Ltd specialises in groundworks, diamond drilling, and a range of construction services including drainage, brickwork, steel fixing,

• N Naivette Services Ltd Waltham Abbey · Crane hire · 1-9 employees

  Naivette Services Ltd offers nationwide haulage and concrete barrier supply. With over 30 years of experience, we provide specialist transport with lo

• N National Energy System Operator (NESO) Kings Langley · Utilities

  We operate today's electricity system and design tomorrow's energy system. We bring together eight activities required to deliver the plans, markets a

• N National Rivers Consortium Ltd Loughton · Drainage

  National Rivers Consortium supplies Phosphorus Mitigation Credits to Councils, LPAs and Developers via free septic tank upgrades in affected watershed

• N National Rock Supplies Ltd Borehamwood · Groundworks

  National Rock Supplies Ltd supplies high-quality construction and landscaping aggregates across the UK. Offering a comprehensive range of materials fo

• N Navantia UK Ltd. London · Steel fabrication

  Navantia UK is a new force in British industry, supporting the UK's defence, energy and maritime ambitions. Established in 2022, we employ over 1,200

• N Nbb Rail Ltd London · Rail infrastructure

  NBB Rail Limited offers comprehensive services to the rail and construction industry as an MEPh+F specialist, covering design, checking, site manageme

• N Nd Technical Group Ltd Addlestone · Utilities · 1-9 employees

  ND Technical Group is a specialist telecoms and utilities infrastructure contractor. Fibre cabling, splicing, and network build services across the UK

• N Nek Gica Ltd Edgware · Groundworks · 1-9 employees

  NEK GICA LTD is a construction company specialising in groundworking and highway maintenance, established in 2009. They offer high-quality services wi

• N Neptune Resources Ltd London · Utilities

  Neptune Resources Limited is a UK-based company specialising in the supply of labour within the Construction and Telecoms industries, operating since

• N Netelz Ltd London · Utilities

  Netelz Ltd specializes in FTTP, wireless, and IT infrastructure solutions, driving the UK's digital transformation with high-speed, reliable connectiv

• N Network Rail Infrastructure Ltd London · Rail infrastructure

  Network Rail owns, operates and develops Britain's rail infrastructure. We work round-the-clock to provide a safe, reliable experience for millions of

• N Network Scaffolding London · Scaffolding

  Network Scaffolding is a leading scaffolding contractor in Scotland, offering full contract design scaffold services for commercial, industrial, housi

• N Newlands Construction Ltd Bookham · Groundworks · 10-49 employees

  Newlands Construction Ltd is a groundworks and civil engineering contractor based in Surrey, serving London and the South East. Established in 1986, t

• N NexaGrid London · Utilities

  NexaGrid is your trusted partner in grid connection and renewable energy solutions. We help developers, asset owners and operators navigate the comple

• N NEXT-GEN PLANT LTD London · Security systems

  Aftermarket specialists in GPS, tiltrotators and safety systems including height & slew limiters and AI cameras. Manufacturer-trained engineers provid

• N Ng Tunnelling Ltd Mitcham · Drainage · 1-9 employees

  NG Tunnelling are specialists in sewer connections, offering a one-stop-shop for drainage works in London & Surrey, covering South East England.

• N NGE CONTRACTING LIMITED London · Civil engineering · 10-49 employees

  NGE, nouvelles générations d'entrepreneurs dans le BTP, construit et rénove les infrastructures au service des territoires et des communautés.

• N NL Reinforcement London · Steel fabrication

  NL Reinforcement is a specialist steel fixing contractor with over two decades of experience across the UK construction industry. We deliver reinforce

• N NNODI Group London · Main contractor

  NNODI Group provides chartered quantity surveying, cost management, commercial management and project advisory services across the UK and internationa

• N No10 Tci Ltd London · Main contractor

  No10 TCI operates in foreign trade, construction, and investment sectors, offering reliable and high-quality solutions with extensive knowledge and ex

• N Nodacrux Ltd Isleworth · Utilities

  Nodacrux is an innovative company providing tailored solutions for industries including oil & gas, mining, energy, and utilities. They specialize in p

• N Nugol Ltd Erith · Main contractor

  Nugol engineers the future with innovative, cost-effective solutions, delivering integrated cost, commercial and project advisory services across the

• N Nuvia Outsourcing London · Concrete works

  Nuvia Outsourcing delivers premium UK payroll, compliance and workforce engagement for construction, healthcare, film, events and contractor-led busin

• N NVM Group Wembley · Civil engineering

  NVM Group is a UK-based energy and infrastructure contractor delivering civil engineering and utility services across projects nationwide. Specialisin

• N Nz Solutions Ltd Stanmore · Utilities

  NZ Solutions delivers telecom infrastructure, web development, mobile app development, custom software, and system integration services.

• 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'Hara Bros. Surfacing Ltd Middlesex · Road surfacing · 10-49 employees

  O'Hara Bros. Surfacing Ltd is a privately owned company established in 1975, providing specialist highway maintenance solutions including resurfacing,

• O O'Mahony Contractors Ltd Buckinghamshire · Rail infrastructure · 1-9 employees

  O'Mahony Contractors Ltd is a construction and maintenance company established in 2000, offering comprehensive services to the rail construction, main

• O OE London · Civil engineering

  Ozgur Engineering Ltd specialises in early-stage temporary works design, delivering integrated and cost-effective engineering solutions for major UK i

• O Offshore Solutions Group London · Civil engineering

  Offshore Solutions Group develops critical wet storage infrastructure (FLOW-Parks™) for the UK's floating offshore wind ambitions, optimising logistic

• O OHOB Morden · Groundworks

  O'Halloran & O'Brien (OHOB) is a respected UK construction group with over 50 years of experience, delivering complex, multi-disciplinary projects acr

• O Oliver Connell And Son Ltd South Greenford · Concrete works · 50-249 employees

  Oliver Connell & Son Ltd are an experienced reinforced concrete frame company with the ability to integrate groundwork and associated works in one pac

• O Omenatic Ltd Caterham · Scaffolding

  Specialist rope access company providing safe, efficient access to difficult locations where conventional methods are impractical. Serving constructio

• O ONE SHOT UTILITIES LTD Wallington · Utilities

  One Shot Utilities is a Wallington based multi-utility company providing utilities upgrade and installation services, in nearby locations such as Bans

• O ONSHORE TECHNICAL LTD London · Utilities

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

• 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 Optimal Developments Ltd London · Main contractor · 1-9 employees

  Builders in King's Lynn with 36 years on the tools. New builds, extensions and renovations across West Norfolk, all backed by our 12-month snagging gu

• 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 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 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 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 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 Construction Consultancy Ltd Orpington · Main contractor

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

• O Oytas UK London · Civil engineering

  Oytas UK is the London branch of Oytas Construction, established in Turkey in 1992. Leveraging 30 years of experience, we specialise in concrete, pref

• P P J Davidson (UK) Ltd Hoddesdon · Concrete works

  PJ Davidson (UK) Limited specialises in concrete works, including vehicle restraint systems, slot drainage, slipform high walls, and continuously rein

• P P.B. Donoghue Watford · Groundworks · 1-9 employees

  P.B. Donoghue is a waste disposal, recycling, and skip hire company covering North London and Watford. They focus on quality, care, and delivery, buil

• P P6 Planning Ltd London · Main contractor

  Expert project management, planning, and project control solutions for complex infrastructure projects across the UK. Decades of experience in high-va

• P Pacific Construction Ltd London · Civil engineering · 1-9 employees

  Pacific Construction is a dynamic construction company established in 1999, known for its trustworthiness and efficiency in delivering large-scale pro

• P Panjiva London · Concrete works

  Panjiva provides data that facilitates global trade, offering transparency through a robust platform with machine-learning technologies and dynamic da