Why some of the biggest stars want Britain in the EU

Benedict Cumberbatch, Keira Knightley, Chiuetel Edzhiofor, Helena Bonham Carter and Vivienne Westwood are the names of just some of the 250 celebrities from the world of art who signed an open letter calling on their compatriots to vote for staying in the European Union.
The letter was published in the newspaper "The Guardian" (see the article here), as in it some of the most famous artists, musicians, writers warn that their country would become "an outsider shouting from the wings" if on referendum on 23-th of June Britons vote for leaving the EU.
The letter was also signed by director Danny Boyle, poet Carol Ann Duffy, writer Hilary Mantel and John le Carré, as well as actors Bill Nighy, Dominic West, Kristin Scott Thomas and singers Paloma Faith and the group "Hot Chip".
A poll to the British Federation of creative organizations and companies showed that 96 percent of its members want to stay in the EU. Among the reasons are access to the European market and European funds, freedom of movement of talent and influence.