The British diver who found the 12 boys and their coach trapped alive in the flooded cave has described his feelings as “massive relief”, as he counted them one by one, sparking a rescue bid unprecedented in its daring and complexity.

London - The British diver who found 12 Thai boys and their coach trapped alive in a flooded cave has described his "massive relief" as he counted them one by one, in what he called an unprecedented rescue operation.