Former Home Secretary Amber Rudd is set to return to the Cabinet as Work and Pensions Secretary, following the resignation of Esther McVey from the role.
Ms McVey resigned from the frontbench over Theresa May’s proposed EU Withdrawal Agreement.
The MP for Tatton said the deal "did not honour the result of the referendum".
In a letter to the Prime Minister, McVey said she could "not look constituents in the eye" if she had voted for Ms May's Brexit Withdrawal deal.
Ms Rudd resigned as Home Secretary in April this year following the Windrush scandal.
She left from the Cabinet after she “inadvertently misled” the Home Affairs Select Committee over targets for the removal of illegal immigrants.
But a report into the row found officials had repeatedly given her the wrong information and then failed to clear up the problem so that she could correct the record.
At the time of the report, Ms Rudd said: "There are elements of this report which just show that, unfortunately, that area of the department did not have a grip on what was going on.
"I hope that there will be changes made as a result of this report so that people get a better service from Immigration Enforcement."