1/1 A SCHOOL bus driver has today pleaded guilty to causing a serious crash in Headbourne Worthy which left three children needing surgery. The Stagecoach double decker bus heading for Henry Beaufort secondary school crashed into a railway bridge in Wellhouse Lane on September 10 last year ripping off the roof. Three pupils needed surgery for life-changing injuries while 12 other suffered minor injuries. All the injured were aged between 11 and 16. Driver Martin Robert Walker, 36, of Hood Road, Southampton, appeared at Winchester Crown Court this morning charged with three counts of causing serious injury by dangerous driving. Walker pleaded guilty to all three charges and will be sentenced on July 9.