Julie Walter's back
Does she have a hunchback in real life?
shareNo, she's not that old either, she's acting
It's not that hard to imitate the "osteo-slump". Look up her role as Miss Overall. She had the same hunched back, but whenever she played a younger role it went away.
B: LOCATE THE DOCTOR
L: PERHAPS HE IS IN THE PUB
B: I WILL EXAMINE THE PINTS
L: Excel-hic-lent