David Lidington has been appointed Lord Chancellor and Justice Secretary in a reshuffle of the cabinet.
It was also announced that Alun Cairns has kept his job as Secretary of State for Wales.
Theresa May is expected to receive a frosty reception when she meets the 1922 Committee later. But what do we know about the group?
The Prime Minister appointed her former leadership rival as Environment Secretary as she confirms her new top team.
He insisted he would be backing Theresa May as leader and has warned MPs to "calm down and get behind the Prime Minister".