In 1991, Matthew Bannister left to spearhead the BBC's charter-renewal strategy called Extending Choice. He was replaced as Managing Editor by Trevor Dann. Kate Marsh was appointed News Editor. In 1993 GLR was forced to relinquish its 1458 kHz medium wave frequency, for a new commercial radio station which was eventually won by Sunrise Radio. Previously it had been simulcasting with 94.9 MHz FM with a few programmes which occasionally opted from FM. In 1993, Nigel Chapman, Head of BBC South & East, drove through a policy of "speech shoulders", forcing GLR to drop its music/speech mix at breakfast and drive times. Dann resigned in protest and left the BBC.