David Herkes , a 53 - year - old retired postmaster , was mowing his front garden when he saw a blue Transit van slow to a standstill across the road .
Black was arrested in Stow on 14 July 1990 .
David Herkes , a 53 - year - old retired postmaster , was mowing Black 's front garden when he saw a blue Transit van slow to a standstill across the road .
Black was arrested in Stow on 14 July 1990 .