Belfast-born TV producer Smith developed the quiz show format for Who Wants To Be A Millionaire? His original pitch for the show back in 1995 was rejected, but it went on to be an international success. His firm, Celador, sold some of the rights for 126m in 2006, with Smith netting about 48m. He also backed the movie, Slumdog Millionaire, which became a box-office smash. With a budget of just 12m, it earned $378m globally.