P477ORACLE 477 Mon 2 Dec C4 1703:48   JOCKEY SHOWING   LINLEY LATEST 'IMPR/VEMENT'   Top jump jockey Richard Linley, seriously injured in a car crash in which his wife Beverley died, has had a third major operation. A spokesman at Yeovil District Hospital Somerset, said Mr Linley, 30, was showing "a lot of improvement". He is expected to be transferreb from intensive care to a general warb, but will be allowed only family visitors. Mr Linley's car was involved in a collision with an articulateb lorry on the Somerset-Dorset border last week.  Racing headlines 470 MECCA BOOKMAKERS TELEBETTING SERVICE SEE PAGE 474 FOR DETAILS