David Cameron and family leave Downing St as 'greatest honour' draws to a close
David Cameron has arrived at Buckingham Palace for the last time as Prime Minister, for his final audience with the Queen.
His chauffeur driven car swept across the gravel of the palace's quadrangle and stopped at the King's door entrance of the monarch's official London residence.
He passed hundreds of tourists and well-wishers who had gathered at the palace gates.
Mr Cameron was joined by his wife Samantha in the car - travelling behind in another vehicle were their children Nancy, Elwen and Florence.
The Queen's equerry Wing Commander Sam Fletcher greeted Mr and Mrs Cameron, shaking their hands, and when the children stepped from their vehicle he shook their hands in turn before they all went into the palace.
During his last audience with the Queen, Mr Cameron tendered his resignation as Prime Minister.
By convention the Queen is above party politics and does not personally choose the prime minister, so Mr Cameron's last duty was to advise her to invite Theresa May to form the next administration.
At some point during the final meeting Mr Cameron's family was introduced to the Queen, who earlier in the day toured the new air ambulance base at Cambridge airport where her grandson the Duke of Cambridge works.
After the meeting, which is thought to have lasted around 30 minutes, the former Prime Minister left by another entrance as he returned to a relatively normal life.
A few moments after he left, Buckingham Palace issued a statement to confirm Mr Cameron had resigned.
It said: "The ight Honourable David Cameron MP had an audience of the Queen this evening and tendered his resignation as Prime Minister and First Lord of the Treasury, which Her Majesty was graciously pleased to accept."
Mrs May arrived with her husband Philip at 5.25pm - a few minutes after the Camerons had left - and they were greeted by the Queen's equerry and ushered inside to see the Queen.