John Volanthen, from Bristol, was one of a number of foreign expert divers drafted in for the rescue of 12 boys and their football coach who had been trapped in a Thai cave for nine days.

He tells BBC Points West about the moment he and his fellow divers first discovered the children alive.

Mr Volanthen, a member of the South and Mid Wales Cave Rescue Team, said they knew they had found them due to the smell in the cave.