The Transport Secretary, Justine Greening, has said she is "disappointed but not surprised" by Virgin Trains' decision to take legal action over the government's decision to award a new West Coast franchise to transport company FirstGroup.
She also said the government would defend its position "robustly".
Remember the Virgin Trains mess? Later an official report into what went wrong will be made public.
The Government has been forced to admit the profitable West Coast Main Line contract has yet to be signed, thanks to a legal bid by Virgin.