facilitating change

Gas systems fit for the future

As the UK transitions towards net zero and creating a sustainable gas system, the utilisation of natural gas and low-carbon gases will play a crucial role. As we look to the future, gas will serve as a vital facilitator in the journey towards achieving net zero emissions, and at United Infrastructure, we are committed to facilitating that change.

We’re proud to work with the UK’s major gas transmission owner operators, to provide a complete turnkey service for pipeline infrastructure and associated above ground network assets.

Our in-house specialisms include:

  • Installation of cross-country pipelines
  • Fabrication of pipework
  • Engineering design
  • Major capital project management

Through our capabilities and innovative team of engineers, we solve the most complex challenges, whatever the scale, focusing on delivering quality and value.

our capabilities

Above ground installation

Our team has the capability to undertake a range of under-pressure and above ground operations. This includes modification to existing assets, rebuild of above ground installations or Pressure Reduction Stations (PRS). We specialise in the installation, maintenance and decommissioning of new and existing assets, and all associated works.

above ground gas installations

upgrading gas infrastructure

High and intermediate pressure gas pipelines

We support network operators to upgrade gas infrastructure across the UK. We replace existing gas pipelines, helping to minimise potential leakage and futureproof the network. We keep the gas flowing, whilst also supporting network upgrades to carry hydrogen in the future.

welder working on gas pipe

leveraging our expertise

Gas distribution and transmission pipelines

We deliver Intermediate Pressure (IP) and Medium Pressure (MP) pipeline diversions, surveying, designing, and undertaking complex operations.

Leveraging our expertise in civil engineering, programme management and stakeholder management, we bring a wealth of knowledge and experience to each project. Our focus is on delivering solutions that ensure long-term protection, lower environmental and carbon impacts, and minimal disruption to local landscapes and traffic.

Gas transmission pipelines

We work on large scale and complex High Pressure (HP) gas pipelines for the UK’s asset owners, using our extensive experience of civil engineering, programme management and stakeholder management to survey, design and undertake complex operations.

Recognising the significant safety aspects of these projects, we ensure health & safety excellence in our delivery approach. We have a robust arrangement with recognised specialist suppliers to the gas industry.

cranes lowering gas pipes into ground

experienced in major upgrades

Compressor installation

Our services encompass pipeline and piping, Above Ground Installations (AGIs) and compressor rehabilitation, upgrade, diversion, re-location, and decommissioning.

As well as the installation of new compressor units and civil works required to integrate them with existing infrastructure facilities, our work includes the mechanical and electrical and instrumentation work associated with the unit and any suction, discharge, and recycle piping.

At United Infrastructure, we maintain close collaboration with manufacturers of compressor and pipeline infrastructure components, ensuring effective programming and the highest standards of quality to deliver exemplary project outcomes.

We’re experienced in delivering major compressor upgrades that have resulted in more environmentally friendly and efficient energy systems, significantly reducing environmental emissions, whilst increasing system capacity to ensure a safe gas supply to communities including homes, businesses, and industrial facilities.

We’re proud to have installed the UK’s first purpose-built compressor unit, which can enable the gas grid to accommodate unrestricted amounts of biomethane into the current gas network. Through our involvement in innovative projects, we are also supporting the transition towards a low carbon gas network.

gas compressor station

Our valued client

National Gas

We have a longstanding, collaborative relationship with National Gas, working in partnership across a range of projects across the UK.

With our capabilities and an innovative team of engineers, we solve the most complex challenges, regardless of scale, and deliver quality and value with a key focus on safety.

Learn more about our partnership with National Gas through the link below.

Infrastructure Services

The future belongs to all of us

We have developed an ESG Plan for our Infrastructure Services business, which gives a focused approach from which we can track our journey towards creating a connected, sustainable future.

Our ESG Plan has three focus areas, with high level commitments to optimise our impact.

How we work towards delivering these commitments will be shaped and reviewed continuously through our internal governance frameworks. We will measure and report against them via our reporting mechanisms and the publication of our annual ESG Impact Report.

united infrastructure employee fitting solar panels on roof

Testimonials

What our clients say about us…

“The United Infrastructure team have worked collaboratively with all sub-contractors, taking full ownership of the technical and environmental challenges. The team have delivered a project ahead of schedule after late award, under budget and without incident. RE/18 submission has been the highest quality I’ve seen across all contracts this year. A big thank you to those involved.”

Josh Russell, Lead Project Manager, AGI Team, Gas Construction

Our clients

Proud to work with

National Gas logo
ENI logo
Cadent logo
exolum logo
Sembcorp logo
Manchester Airport logo
net zero teeside logo
bpa logo
northern Endurance partnership logo
Wales and West Utilities logo
Northern Gas Networks logo
SGN logo
BP logo

News

Our latest news

View all
17/04/2026

United Infrastructure secures place on SP Energy Networks clean power frameworks

United Infrastructure has been awarded two major SP Energy Networks frameworks, covering both substation...

26/03/2026

United Infrastructure to deliver cathodic protection upgrade at Bacton Gas Terminal

United Infrastructure is pleased to announce that it has commenced a major upgrade to...

19/02/2026

United Infrastructure secures Cadent contract at Bromley-By-Bow Gasworks

United Infrastructure is pleased to announce the acquisition of Simkiss Group, a leading engineering...

22/01/2026

United Infrastructure appointed to Wessex Water Minor Works Infrastructure Framework

We have been appointed by Wessex Water to deliver design-and-build services under its Minor...

14/10/2025

United Infrastructure secures £30m Affinity Water AMP8 Capital Framework

United Infrastructure has been awarded a £30 million contract by Affinity Water on its...

09/10/2025

United Infrastructure to deliver roll out of smart meters for Northumbrian Water

United Infrastructure has been awarded a contract by Northumbrian Water as its smart metering...

Got a question?

Get in touch

Whether you have a specific project in mind or if you’d like to find out more about our gas infrastructure services and how we can help you, we’d love to hear from you.

Accreditations

Proud of our accreditations

Achilles carbon reduce certified logo
Achilles logo
bsi iso 9001 logo
bsi iso 14001 logo
bsi iso 45001 logo
bsi logo
CEMARS logo
Construction online gold member logo
ICES approved partner logo
information commissioners office logo
IGEM company of the year award banner
IGEM institute of gas engineers and managers logo
Institute of water logo
North West Hydrogen Alliance logo
pipeline industries guild logo
rospa logo
ssip logo
USAG logo

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