The author of the report into the government's handling of the West Coast Main Line franchise contract is due to give evidence today.
Ministers had initially awarded the contract to FirstGroup, but the deal was scrapped after significant technical flaws were found in the bidding process.
Virgin is expected to continue to run the line for a further 12 months in the meantime.
The true cost of the fiasco over the West Coast Main Line franchise is only just beginning to become clear.
A critical report by MPS has condemned the £50 million cost to the taxpayer caused by the West Coast Mainline fiasco.
Transport Secretary and Derbyshire Dales MP Patrick McLoughlin has told MPs today that mistakes over West Coast should not have been made.