The remaining companies working on the framework for renewals are Balfour Beatty, Jarvis, Amey SECO and First Engineering
Carillion and Grant Rail have been axed from Network Rail’s framework for renewals.
It is part of Network Rail’s plan to reduce its existing number of contractors from six to four.
Proposals to rationalise the framework were first announced in December 2006.
The contractors were judged on safety, engineering quality, cost and ability to start and finish work on time.