Apparently "Radio 1 has come under pressure from both its commercial rivals and the BBC Trust to attract a younger audience after the average age of its listenership kept creeping up"

http://www.guardian.co.uk/media/2011/dec/07/judge-jules-radio-1-gilles-peterson?newsfeed=true

A bit gutting to see peterson leave, one of the few reason why i tune in & surprised me a bit with them getting rid of kissy sell out, he's only been there a few years.