 He then joined with team mates Tim Graham, Adrian Metcalfe, and Robbie Brightwell in the 4 x 400 metres relay where they won the silver medal.Cooper also competed in the 400 metre hurdles at the 1968 Summer Olympics in Mexico serving as Great Britain's third-string athlete in this event, behind gold medallist David Hemery and bronze medallist John Sherwood.John Cooper originally went to school at Lutterworth Grammar School.