I have been contacted directly by Petra, the partner of Harry Childs, so although this is a repeat, maybe new on here may have info. This is a quote from her email:- "Harry trained as an artificer in Gosport, then went on the happy hermes from 75-78 then he went on the warspite/resolution/conqueror and vanguard. He went on to petty officer then left in the rank of a chief, mainly working as electrical engineer/ nuclear operator. He was based in faslane and in barrow for most of the time. He served on subs Warspite/resolution/conqueror and vanguard from the late 70's to the early 90's". So, anybody know of Harry who would be interested in getting in touch? Please get back to me.