He teaches technical diving all over the world, including the UK, Egypt, Lebanon and Greece.
Mark Ellyatt held the record for the world's deepest dive reaching 313 m (1,027 ft) in 2003 35 miles off the coast of Phuket, Thailand with a dive lasting seven hours, beating John Bennett's previous 308 m (1,010 ft) record.
Ellyatt assisted the local diver Christian Francis in discovering the wreck of the battleship HMS Victoria in 2004, 150m underwater off Tripoli, Lebanon.
The wreck sits vertically on its bow, partly buried in the seabed - described as being its 'own underwater tombstone'.
[5][6] Mark Ellyat has written about his early diving experiences and later record attempts in his book Ocean Gladiator, published in 2005.