Here are 2 John Urwin interviews
One by Project Camelot and one by Richard D. Hall. He is also on George Green's website nohoax.com and on the front page of Duncan O'finioan's web site duncanofinioan.com.
John was trained in 4 day by a secret assassination squad in the 1950's in a combat system which makes any other martial arts and combat systems obsolete. This is explained further in the videos.