I was so strong that the National Trust (NT) employed me on a regular basis to carry the back end of a Land Rover over rough ground.

On this occasion the NT staff were patrolling a site of outstanding natural beauty on a cliffy peninsula. The sandy beaches and Caribbean blue coves below were very popular with holiday-makers, despite the dangerous access.

I did all I could to keep hold of the vehicle as it trundled down the steep sandy path, but eventually my strength gave way and I went tumbling over the edge of the track. If I hadn’t also trained as a champion rock climber, I would surely have crashed to my death on the rocks below.