In yet another personnel change, Sugababes founding member Keisha Buchanan has quit the band to be replaced by Jade Ewen, who represented the UK at this year’s Eurovision Song Contest. Rumours have abounded that Ewen would be joining in place of Amelle Berrabah but she will in fact join the latter and Heidi Range to promote new album Sweet 7, while Buchanan bids to become the first ex-member to enjoy extended success. The new line-up will we assume make its debut at the Arthur’s Day gig in Vicar Street this Thursday.