This week Derek Jewell takes a look at some British bands. THE BOWLES BROTHERS and SWEET substitute - one an innovative and exciting blend of traditional and modern popular styles, the other a reflection of the nostalgia trend in pop; and a new band, UK, formed by Bill Bruford. John Weston. Eddie Jobson and Allan Holdsworth. Plus a sample of the music of JIMMY JEWELL (no relation), whose talents have so often been muted among the accompanists of major singers. gramophone records