About Infrasig

About Infrasig

Infrasig is a combination of Carillion Rail’s expertise in delivering major rail infrastructure projects and Bombardier Transportation’s rail signalling and telecommunications technologies.

About Infrasig

Our Values

Our values define the way we work and interact with customers, rail passengers and the communities in which we operate. 

> Read Our Values

A joint venture

Infrasig is a joint venture between:



Our Story

Infrasig was formed in 2012 as a joint venture between Carillion Rail and Bombardier


Infrasig has a strong commitment to sustainability inherited from both its parent companies. All of our processes form part of our carbon reduction strategy which aims to support the long term aim of reducing the environmental impact of our railways.


We engage proactively at all organisational levels to ensure that the high safety standards we set ourselves are embedded in everything Infrasig is committed to delivering the highest levels of operational and passenger safety across the UK rail network. 

> Read Safety