Chessington World of Adventures’ rollercoaster inventor John Wardley is a god to rollercoaster fanatic Calum Henderson who has ridden his most famous creation Vampire 4,000 times. The Mirror joins him on ride 4,001Chessington World of Adventures’ rollercoaster inventor John Wardley is a god to rollercoaster fanatic Calum Henderson who has ridden his most famous creation Vampire 4,000 times. The Mirror joins him on ride 4,001