Glacier Energy specialises in the comprehensive repair, refurbishment, and re-engineering of obsolete critical parts for the rail industry. Delivered from our dedicated Aberdeen and Washington workshops, our expert heat transfer team enhances asset efficiency, reduces downtime and extends the life of our customer’s critical equipment. Through the recent acquisition of Advanced Group Services, we now have dedicated rail engineering team with over 50 years industry specific experience.

Gutteridge, Haskins & Davey (GHD) is one of the world’s leading engineering, architecture, and environmental consulting companies, with integrated digital and advisory businesses.

GHD is an employee-owned company with a stated vision to address humanity’s most urgent needs: to ensure water, energy and urbanisation are made sustainable for generations to come.

Grayling Communications Limited is ‘the world’s local communications agency’, with a large affiliate network and 32 offices across the globe. Its talented strategists, public relations experts, data analysts, creatives, designers, producers, and consultants develop solutions that spark conversations, drive change, and protect client reputations. These industry-leading services range from corporate reputation management and consumer brand marketing to digital marketing, content creation, crisis support and stakeholder engagement.

Graybar is a specialist manufacturer of products for the rail industry., with an impressive range of products that have PADS approval from Network Rail.

We manufacture a very successful and unique self-regulating railway point heating system and the largest, comprehensive range of cable accessories for railway infrastructure telecommunications, signalling and power cable applications.

And we supply a complete design authority, system manufacturing, supply and installation, training, and commissioning service.

Gramm Barrier Systems are the UK’s leading specialist contractors in the supply and installation of noise barriers and security fencing.

Gramm installs all types of barriers including CE Marked National Highways compliant systems and whole life costs driven railway barriers. We carry out noise surveys, noise modelling, barrier designs including calculations and drawings.

Graffica provides simulation and modelling consultancy services, together with its simulation platform called HERMES (the Holistic Environment for Railway Modelling Evaluation and Simulation).

HERMES provides a unique whole railway simulation facility to undertake a broad range of railway evaluation tasks in a virtual environment in support of operational decision-making processes.

Global Reach Technology is a provider of high-performance wireless ISP solutions and services. It supports the most complex Wi-Fi networks, enhancing connectivity for brands, operators, and customers.

Global Reach Technology’s solutions help clients to increase everything from revenue to brand loyalty. Simplifying difficult connectivity, they offer a first-class user experience. And its technology is built for scale, handling thousands of terabytes of data and billions of Wi-Fi sessions each year.

Gleeds work with public and private sector clients in, primarily, the commercial aspects of the planning, development and delivery of railway assets, systems and services.

Our experience includes high speed rail, national rail, underground rail, light rail, station, depot and other rail projects and their relationship with oversite developments.

Gemini Rail Services combine the experience and expertise of industry-leading companies into one innovative and dynamic team.

We’re focused on driving technological improvements and high-quality solutions to meet the demands of our customers in the rail industry.

Gemini Rail Services offers unique capabilities, including a range of own-site or depot-based solutions to meet your needs.

Gardiner & Theobald (G&T) is an independent construction and property consultancy working across all sectors of the built environment.

G&T has been working continuously in the UK rail sector for over 30 years, providing a wide range of services on new build, upgrade, renewal and maintenance works.

Galvanizers Association is the source of free information and advice about hot dip galvanizing, cost effective corrosion protection and the galvanizing industry.

Gripple is a leading manufacturer of wire joining and tensioning solutions. With a commitment to innovation, sustainability and quality, Gripple provides cutting-edge products for various industries, including rail, construction, solar, agriculture, viticulture and landscaping applications. The company employs over 1,000 people in 15 global locations and manufactures across seven sites in Sheffield, South Yorkshire.