Britain's gym fanatic who holds over 600 world records for strength and endurance

Meet Britain's fittest man - a gym fanatic who holds over 600 world records for strength and endurance.

William Cannon, 51, has broken 605 world records according to RecordSetter - an organisation that monitors world records. The fitness fanatic has spent the last 20 years of his life setting the impressive records which include a three hour half marathon with a 22kg rucksack. In 2011, William proved his strength by completing five reps of 226kg on a rowing machine which set a new world record.