David Gauke, who was previously Chief Secretary to the Treasury, has been promoted to Works and Pensions Secretary.
Meanwhile, Greg Clarke remains Business Secretary following the Cabinet reshuffle.
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".