LONDON, ENGLAND – APRIL 22: Artist and tattooist Dan Gold creates a tattoo featuring an image of Albert Einstein in his West Hampstead studio on April 22, 2014 in London, England. Dan Gold is one of the world’s most prominent tattooists whose unique, bold and often colourful style is a mixture of traditional tattoo art and graffiti. Dan Gold has tattooed numerous famous clients including Kate Moss and Britney Spears; he has also been instrumental in reducing the stigma associated with tattoos. The popularity of tattoos has increased dramatically over the past few years, aided by several high profile people such as: David Beckham, Samantha Cameron and Cheryl Cole being tattooed. (Photo by Oli Scarff/Getty Images)