David Cameron will be appearing before UK Parliament as prime minister for the last time on Wednesday before handing over to successor Theresa May.
Cameron will step aside on after losing the campaign to keep Britain in the European Union. He will take on his final session of prime minister's questions before traveling to Buckingham Palace to formally tender his resignation to Queen Elizabeth II.
Theresa May will then have the task of selecting her new cabinet which she could unveil as early as Wednesday evening.
British media have focused on whether British Chancellor George Osborne will keep his job in charge of the economy, which has been rattled since the Brexit vote.
British foreign secretary Philip Hammond as been tipped as a potential chancellor under May. During a brief encounter with a reporter on Wednesday Hammond insisted "Brexit does mean Brexit".
It's unclear whether the current Justice Secretary and leading Brexiteer Michael Gove will have a place in the new cabinet, although he has made clear he would be happy to serve under Theresa May.