I've not been able to do too much on this (other than receive the certificate) this week. I'm on the road until Friday. Frustrating when life gets in the way of FH research.

Monica, great find on the other Harry Hansen - likely much more of a candidate for Gertrude than the one that died in London. When I get home I'll see if I can do some tracking on him. Did the death record you found for the "other Harry" 1977, by chance, indicate where he was born?
Another "stupid" question. Can one obtain a marriage record for a 1950 wedding?
mshrmh, TX for the lay of the land & the "retiring to the seaside" explanation.
I did find that Gertrude's uncle died in Blackpool, though that would have been quite a while before Gertrude moved there. (I don't have my notes with me at the hotel.) I'll do some checking to see if he had children as that may have been an attraction for her.
Gertrude had a half brother as well. Christina Ayton and William Jacob had a son in London: Ayton Jacob. I've not followed that branch; perhaps it might lead somewhere.
I've not heard anything from the actor's union other than to confirm that they got the request & would get to me shortly. My fingers are crossed that the request is sitting in someone's To-Do pile.
Cheers,