BBC Radio 1 part of a Guinness World Record attempt, in aid of Comic Relief. The pair stayed on air for 52 hours in total setting a new world record for 'Radio DJ Endurance Marathon (Team)’ after already breaking Simon Mayo's 12-year record for Radio 1's Longest Show of 37 hours which he set in 1999, also for Comic Relief. The presenters started on 16 March 2011 and came off air at 10:30am on 18 March 2011. During this Fearne Cotton made a bet with DJ Chris Moyles that if they raise over £2,000,000 she will appear on the show in a swimsuit.
BBC Radio 1 2 was broadcasting a Bank Holiday edition of Sport on 2. To coincide with Radio 1's 20th birthday, the first full-time FM broadcast began in the London area on 31 October 1987, at low power on 104.8 MHz. A year later the FM frequencies became national after the police communication allocation changed, freeing up what is known today as 97–99 FM, which the BBC acquired. The rollout of Radio 1 on FM began on 1 September 1988, starting with Central Scotland, the Midlands and the north of England. A month later, to coincide with an extension of broadcast hours, Radio