Glad to see you got back to us at last! I've read back through and will have another go.
There are no Macks at 60 Weltje Road on the 1924 electoral roll:
https://www.ancestry.co.uk/interacti...0_212998-00376
Ancestry doesn't seem to have a 1925 e roll for that street, and they seem to be missing the even numbers in 1926.