A number of cabinet members have been sacked or have resigned after Johnson's victory.
Here are the departures so far:
Jeremy Hunt, former Foreign Secretary
Penny Mordaunt, former Defense Secretary
Greg Clark, former Business Secretary
Liam Fox, former International Development Secretary
Philip Hammond, former Chancellor of the Exchequer
Damian Hinds, former Education Secretary
James Brokenshire, former Housing, Communities and Local Government Secretary
Rory Stewart, former Secretary for International Development
Karen Bradley, former Secretary of State for Northern Ireland
David Liddington, former Secretary of State for Justice
David Gauke, former UK Secretary of State for Justice and Lord Chancellor
The May-Johnson transition is the biggest reshuffling of Cabinet ministers to happen in more than a decade, according to an analysis of ministerial databases by the Institute for Government, a London-based independent think tank.
The Ministers' section of UK government's website currently reads: "This page is currently being updated."