Eggheads is a British quiz show produced by 12 Yard. It was first broadcast in November 2003 chaired by Dermot Murnaghan. In 2008, Jeremy Vine became joint chair, and subsequently sole chair. The show has inspired three spinoff series: Are You an Egghead? (2008), Revenge of the Egghead (2014) and Make Me an Egghead (2016). There have also been episodes of the regular series featuring teams of celebrities in their own short series, with their own rolling prize fund. History The show began in 2003 with Dermot Murnaghan as the presenter. From 2008, Jeremy Vine presented when Murnaghan was hosting the spinoff series. After the spin-off show finished, Murnaghan and Vine continued to host the series on a rotational basis, with Murnaghan typically hosting the first half of each series and Vine taking over for the second half. From series 16 Vine became the sole presenter. The series originally broadcast on BBC One at lunchtime beginning in November 2003, and later moved to a primetime slot on BBC Two from 2005 to 2020. On 31 December 2016 the quiz made a brief cameo in BBC One’s Peter Pan Goes Wrong TV special. On 12 March 2021, after a year's hiatus during the COVID-19 pandemic, it was announced on Jeremy Vine's titular Channel 5 programme that the quiz show would be moving to Channel 5 with Vine and the most recent Eggheads returning. The new series premiered on 4 October 2021, and alongside a studio change, only four Eggheads and four contestants now played at a time with a reduction to three one-on-one rounds to accommodate advert breaks (due to Channel 5's status as a commercial broadcaster). Due to social distancing restrictions, the desks were lengthened and perspex screens were added. The first challengers, playing for charity, were Jay's Virtual Quiz, who had become a fundraising hit on social media during the pandemic. An additional Egghead was featured on the opening credits and competed from week two. Format In each episode, a team of five quiz and game show champions (the Eggheads) is challenged by a team of five contestants for prize money. If the challengers lose, then £1,000 is added to the prize money fund until the Eggheads are beaten, when the prize will revert to £1,000. The most prize money that has been won is £75,000, in 2007. Some teams have been reduced to one contestant for the final