Here's what he told the "The Scottish Sun" newspaper:
I have turned down a load of other shows to make Torchwood. We'll be filming it in LA as it's now a collaboration between the BBC and the Starz Network in America. They're planning to make it for the next seven years. So I'll be spending six months a year in Hollywood and six back in the UK.
Torchwood: The New World is expected to hit television screens mid-2011.