The Prime Minister has tweeted this photo of his birthday celebration with colleagues at the Conservative party conference in Birmingham. He turns 46 today.
He wrote: "Thanks to my team for squeezing in a quick birthday celebration on this v hectic day."
The cakes appear to be 'Giant Colin the Caterpillar Cakes' from Marks & Spencer.
Boris has pledged his loyalty to the Prime Minister, telling the Conservative Party conference David Cameron will win the 2015 election.
London Mayor Boris Johnson will deliver a keynote speech at the Tory party conference, amid speculation about his leadership ambitions.