|Dermot O'Leary (2006–2008)|
Ben Shephard (2008–2009)
1 vs. 100 is a game show where one person answers questions to defeat and survive "The Mob" of 100. Based on the Dutch format called Een tegen 100 ("1 tegen 100").
One player is selected to play the game as The One from 101 people, collectively known as The Mob. To win the game outright, the One must eliminate all 100 remaining members of the Mob by answering questions correctly.
After having the opportunity to select a category, a multiple-choice question with three options is revealed. The Mob is given 6 seconds to lock in their answer before The One is given the opportunity to answer the question. If the One is correct, all Mob members that answered the question incorrectly are eliminated from further play, bringing the lone contestant closer to winning the game. The One earns £1,000 multiplied by the number of mob members eliminated in that question. If the contestant eliminates all 100 mob members, he or she claims all the money in the bank plus an additional £50,000. However, if the One incorrectly answers a question, the game ends and he or she leaves with nothing.
The One has three dodges, where he or she is exempt from having to answer the question, but must forfeit half of the bank. In addition, after the first question, the One can also use one doubler to earn £2,000 multiplied by the number of mob members eliminated if the One answers the question correctly.
The maximum amount of money a contestant can win is £250,000.