Images of Kylie Minogue, Britney Spears and Eminem have joined the Beatles and other 1960s icons on the walls of the London Institute's new headquarters, the former Royal Army Medical College in Millbank. The 30-year-old mural of 1960s pop stars, painted by soldiers, came to light when the London Institute began its move into the site earlier this year. The institute then asked teenagers to update the work, decorating the walls of a disused operating theatre.