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 longest regular broadcast on the network from outside the capital. Radio 1 originally broadcast on 1214 kHz medium wave (or 247 metres). On 23 November 1978, the station was moved to 1053 and 1089 kHz (275 and 285 m), but did not broadcast nationally on its own FM frequencies until late 1987. The BBC had been allocated three FM frequency ranges in 1955, for the then Light Programme (now BBC Radio 2), Third Programme (now BBC Radio 3) and Home Service (now BBC Radio 4) stations. Thus when Radio 1 was launched, there was no FM frequency range allocated for