Tim Westwood is casualty of new schedule
Tim Westwood is to leave Radio 1 and 1Xtra as a new generation of presenters takes over Saturday nights.
Westwood, who currently hosts 1Xtra's 9-11pm Saturday show, will make way for Charlie Sloth.
The pioneering rap and hip-hop DJ also lost his 1Xtra weekday drivetime slot to Sloth last year.
Sloth said succeeding 'a legend' like Westwood - who joined Radio 1 in 1994 to present its first rap show - was 'a dream come true'.
Ben Cooper, Radio 1 controller, said: 'I'd like to thank Tim for the last 20 years on Radio 1 - his passion for hip-hop is legendary - I wish him all the very best.'
Trevor Nelson will also move from Saturday nights, but will remain at the helm of 1Xtra's weekday 10am-1pm programme.
From September 21, Sloth will be preceded on Saturday nights by 1Xtra evening presenter MistaJam and followed by weekend presenter DJ Target.
Their shows will go out on Radio 1 and 1Xtra as part of the 12 hour Saturday night simulcast from 7pm to 7am.
BBC newcomer Clara Amfo - MTV's current voice behind the official countdowns - will host the weekend breakfast show.