Edited sentence: In May 2006, Deverell promised there were no plans to alter the format of Grange Hill but news of the series' realigment towards a younger audience confirms the U-turn.Several popular series have either been revised or cancelled outright; Byker Grove ended in 2006 after 18 series, the last being broadcast solely on the digital CBBC Channel.Since assuming his post last year, Deverell has been ruthless in his efforts to re-align CBBC towards a target audience of 6-12 years and in doing so has alienated older children and teenagers whose needs were hitherto catered for by the department.The BBC has announced its new programming strand for older children and teenagers will launch this Autumn, but CBBC has been criticised for not continuing to provide for this age range until the new service is up and running.The other teenage drama series, Grange Hill, was removed from BBC1 in 2007 favour of exclusive scheduling on CBBC and from next year will concentrate on the early years of secondary school in order to fit in with CBBC's new brief