Thanks once again Donna for taking the trouble to confirm that.

Perhaps if someone is going to the Borough Cemetery they might be willing to have a look for me while there?

COLLISTER, Edith Eleanor, 73, Dbc, 11 Jun 1940 #A 344
James Colliser 84 bur Dec 1953 #A344

I may well be out of luck - they had no children to raise a memorial, but the survivor might have put something up for the first to go. Also, both had plenty of siblings who might have obliged.

Thanks for your interest.