Prime Minister David Cameron has visited Abbey Road Studios to meet with leading figures from the creative industries to discuss their call for the UK to remain in the EU.
Outside the studios, Mr Cameron and Labour's former culture secretary Tessa Jowell 'recreated' the famous cover of The Beatles' Abbey Road album, walking across the iconic pedestrian crossing outside.
Benedict Cumberbatch, Bill Nighy, Chiwetel Ejiofor, Keira Knightley and Dame Kristin Scott Thomas are amongmany leading figures to sign a letter, warning that "global creative success would be severely weakened by walking away" from the EU.
One of the signatories to the letter was the actor Dominic West - perhaps best known for playing Jimmy McNulty in the TV series The Wire.
Mr West was one of the people who took part in a round table discussion chaired by the Mr Cameron at the world's most famous recording studio.
Culture Minister Ed Vaizey and Tessa Jowell also took part.
Mr Cameron had earlier received a tour of the studios where The Beatles and Pink Floyd recorded some of their biggest hits.