Smart selection of pics John, although I can't for the life of me work out what the techie(?) on the right of the first picture is doing.
When we Crabs on 72 were preening ourselves for having had the first mil Wessex to pass 5000 hours, Westlands sent a congratulatory/BZ which ended up in the linebook (whatever happened to that...?). It said all the usual pleasantries, noted that the highest-houred RN airframe had reached just over 4500 hours - oh, and Bristows fleet leader (newer aircraft than ours) had just passed 13,600...
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