Live updates: David Cameron prepares to leave Downing Street
David Cameron has held his final cabinet meeting as prime minister.
Mr Cameron will take his last Prime Minister's Questions on Wednesday before offering his resignation to the Queen.
Theresa May will then take office and become leader of the Conservative Party and Prime Minister later that day.
Speaking after Andrea Leadsom resigned from the leadership contest, Mrs May said she was "honoured and humbled" to have been chosen as the new party leader and pledged that "together we will build a better Britain".