The accident occurred on a notoriously dangerous section of the road, the scene of 15 serious accidents (two fatal) in the previous two years; the road was also wet at the time. Driving at speed (one witness estimated 80 m.p.h.), Hawthorn overtook a Mercedes-Benz 300SL 'gull-wing' sports car driven by an acquaintance, the motor racing team manager Rob Walker. On entering a right-hand bend shortly after passing the Mercedes, Hawthorn clipped a 'Keep Left' bollard dividing the two carriageways, causing him to lose control. The Jaguar glanced an oncoming Bedford lorry before careering back across the eastbound carriageway sideways into a roadside tree, uprooting it. The impact caused Hawthorn fatal head injuries and propelled him onto the rear seat.