I served on Puma between '59 and '62 and remember the fire well, it was started by EM who will remain nameless, in the machinery conversion compartment, outside the electrical workshop over the stabilisers, just off the coast of Africa, fire brought under control, deck glowing red, if I remember right, they flew two Scotland yard detectives in to investigate, who identified the nameless EM, who was court martialled in Simons town and discharged, the last I heard he was driving buses in Glasgow...….. hopes this helps......