Who's who of vegans

Blackpool's vegan restaurant may be having a tough time, but the diet is hugely popular with celebrities.

Here are 20 famous names who have said they have followed the cruelty free ethical diet.

Pop diva Madonna, Chris Martin of Coldplay, his former partner Gwyneth Paltrow, Brad Pitt, Paul McCartney, tennis royalty Serena and Venus Williams, pop singers Erykah Badu and Ariana Grande actress Alicia Silverstone and of course science genius Albert Einstein.