Christopher John Tarrant, is an English broadcaster, television personality and former radio DJ. He presented the ITV children's television show Tiswas from 1974 to 1981, and the game show Who Wants to Be a Millionaire? from 1998 to 2014. He was a Capital Radio host from 1984 to 2004. Tarrant received an OBE in 2004 for his charity work, in particular his campaigning on behalf of disadvantaged children.

Who Wants to Be a Millionaire? is a British television quiz show, created by David Briggs, Steven Knight and Mike Whitehill for the ITV network. The programme's format has contestants taking on multiple-choice questions based upon general knowledge, winning a cash prize for each question they answer correctly, with the amount offered increasing as they take on more difficult questions. If an incorrect answer is given, the contestant will leave with whatever cash prize is guaranteed by the last safety net they have passed, unless they opt to walk away before answering the next question with the money they had managed to reach. To assist in the quiz, contestants are given a series of "lifelines" to help answer questions.