He has made a career out of winding people up in everything from The Office to his Golden Globes speeches " but is the comedian's bark worse than his bite? Ricky Gervais's assistant leads me past a huge, empty room to the top floor of an office above a shop on a swanky London high street. Gervais is sitting behind a desk at his computer in another huge, empty room, and looks as if he's just squatted the place. There …
