Theresa May is to face a barrage of Brexit questions as the she appears before a Commons committee today (December 20).
The Prime Minister is being quizzed by the liaison committee, which is made up of the chairmen and chairwomen of select committees, for the first time since the general election.
The chairwoman of the committee is Sarah Wollaston, one of the Tory rebels who inflicted a humiliating Commons defeat on the Government over Brexit plans last week.
She has said: "Given that this session follows such a significant EU Council meeting and recent events in Parliament, on this occasion we will start with a focus on Brexit negotiations and transitionary arrangements."
The MP was one of 11 Tory rebels who backed an amendment to the EU Withdrawal Bill which guarantees Parliament a "meaningful" vote on any Brexit deal.
The amendment requires any withdrawal deal to be approved by a separate Act of Parliament before being implemented.
The landmark bill is also returning to the Commons today (December 20) and the Government is seeking to avoid a second serious defeat over the legislation.
Tory rebels have signalled they may back away from a rejection of plans to write the Brexit date of March 29 2019, into law in favour of a compromise.
Sources say the Government is "looking closely" at an amendment allowing the date to be included in legislation, but with flexibility to change it if negotiations with Brussels look set to stretch beyond March 2019.
The liaison committee is also planning to question the PM on a range of other issues, from health funding to combating sexual harassment.