Over the past few decades - at least since 1979 - British Prime Ministers and their spouses have had their photographs taken as they arrive at Number 10 Downing Street for the first time.

Getty has a selection of these photos, and here is a reminder of how we - and they - were.

Sam Cam enetering on 8 May 2015
On 8 May 2015, David Cameron and his wife Samantha entered the official residence for the second time
Sam and Cam again
David Cameron and Nick Clegg
But back in 2010, there was a different kind of 'married couple' entering Number 10...
Sarah and Gordon Brown
Gordon and Sarah Brown arrived at Downing Street, not after an election victory - but in the wake of Tony Blair's resignation
Blair family
Nicky Blair (far left) and the Blair Family outside 10 Downing Street in London after Labour's victory in the general election in 2005.REUTERS/Kieran Doherty
Blair family June 2001
Re-elected in 2001, the Blairs enter Number 10 with baby Leo
Blairs in 1997
The dawn of a new era, as Tony Blair and Cherie Booth-Blair enter No 10 for the first time on 2 May 1997
Jon Major at No 10
No one had really expected John Major to be elected in 1992. But he was returned with a majority of 21
Third victory
Britain's Prime Minister Margaret Thatcher and husband Denis on the steps of 10 Downing Street in 1987 after winning her third consecutive term in officeReuters
thatcher 1981
Margaret and Dennis Thatcher enter Number 10 after the Conservatives' victory in 1979