Sir Richard Branson will attend a Transport Committee hearing over the decision to award the West Coast Mainline rail franchise to rival company, First Group.
Virgin Trains have held the contract, which operates the services from Holyhead to Euston,15 years.
Last week he launched a legal challenge to prompt a review into the decision.
Since Branson's court challenge, Government Ministers had to admit to MPs that they have not yet been able to sign the contract with First Group.
The party is calling on the Transport Secretary to delay signing off the contract awarding the West Coast Mainline franchise to FirstGroup.
Virgin Rail has lost its West Coast main line franchise, including the route from Holyhead to Euston, the UK Government has announced.