I think he's affecting a "mid-Atlantic" accent, the voice that wasn't quite British and not quite American that announcers and many actors used to be trained to do. I guess they even went "mid-Atlantic" in Australia in those days. Mid-Atlantic-Pacific?
My mom was born in Australia, but had an English father and ended up moving to England. She told me that to be a proper gentleman or lady you were forced to go to elocution school (she was, in addition to being required to learn latin and learn to dance properly), so the impetus for placating the colonial superiors was very strong in the 50's.
Add about 10% Cyndi Lauper and you'd have the woman who owned the shop across the street from the apartment I lived in as a kid. As creepy as those belts look, they're a thousand times creepier in real life.
She told my parents she could feel all of the food she'd eaten during the day drop down into her intestines when she took the belt off in the evening, and nobody knew how much she was exaggerating.
I can safely say that if I saw someone that was 10% Cyndi Lauper and 90% Norma Ann Sykes walking down the street, my immediate reaction would not be, "My God does that woman have a creepy belt."