The son of Islay sheep farmers, the Orkney and Shetland MP becomes Scottish Secretary. He insists the most important person in his house is his wife, the local vet.
The LibDem MP for Lewes, born in Aberdeen, has written a book claiming the death of ex-Iraq weapons inspector Dr David Kelly was suspicious. He becomes a Home Office Minister.
The ex-TV presenter is seen as a strong media performer for the Tories. She has been credited with doing well at the Department of Work and Pensions, where she has been promoted.
Earlier this year the Tory former TV presenter sparked a row after suggesting a person's background could "almost" be judged by their weight. She becomes the first ever female Defence Minister.
The Tory MP triggered controversy in 2011 when he suggested veterans of the World War Two Arctic convoys did not deserve medals. His background as a former soldier has raised eyebrows about his position as a minister in the Northern Ireland team.
Removed as LibDem Scottish Secretary. The former accountant was praised by unionists for his "reasonable" approach to the referendum debate.
The East Renfrewshire Labour MP, who helped run David Miliband's Labour leadership campaign in 2010, was demoted from Shadow Defence Secretary to international development.
The Taunton Deane MP is tipped as a possible future LibDem leader. The axed Home Office Minister was told by Nick Clegg that other LibDem MPs had to be given a chance. He was replaced by Norman Baker.