Holyrood's Transport Minister will today make a statement on the "shambolic" cancellation of the West Coast main line rail franchise.
Keith Brown is expected to outline his concerns about the handling of the UK Government u-turn which has cost taxpayers £40 million.
In the wake of the controversial decision, Mr Brown complained that the Scottish Government was given no warning of a decision which affects the country.
He said: "This is a shambolic situation that affects thousands of passengers in and out of Scotland."
The mess that is emerging over the bidding process for the West Coast Main Line will be costly and raise the question of re-nationalisation.
The decision to award FirstGroup the West Coast Main Line rail franchise has been cancelled, the Department for Transport said.