BBC Radio 1 been presented by various YouTubers such as Jim Chapman and Hannah Witton. In January 2015, Clara Amfo replaced Jameela Jamil as host of The Official Chart on Sundays (4pm7pm) and in March, Zane Lowe left Radio 1 and was replaced by Annie Mac on the new music evening show. In May 2015, Fearne Cotton left the station after almost 10 years. Her weekday morning show was taken over by Clara Amfo. Adele Roberts also joined the weekday schedule line-up, hosting the Early Breakfast show. In July 2015, The Official Chart moved to a Friday from 4pm to 5:45pm, hosted by
BBC Radio 1 pirate radio stations, when the average age of the UK population was 27. The BBC claim that they target the 1529 age group, and the average age of its UK audience since 2009 is 30. BBC Radio 1 started 24-hour broadcasting on 1 May 1991. Radio 1 was established in 1967 (along with the more middle of the road BBC Radio 2) as a successor to the BBC Light Programme, which had broadcast popular music and other entertainment since 1945. Radio 1 was conceived as a direct response to the popularity of offshore pirate radio stations such as Radio Caroline