The original format was tweaked in later years, which included changing the number of questions asked, altering the payout structure, incorporating a time limit, and increasing the number of lifelines offered. The series originally aired from 4 September 1998 to 11 February 2014 and was presented by Chris Tarrant, airing a total of 592 episodes across 30 series. To assist in the quiz, contestants are given a series of 'lifelines' to help answer 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. 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.
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. Sony Pictures Television (2018–present).