I think the manager in a nursing home has to be a qualified nurse.
Mum's nursing home manager does not appear on the Nursing and Midwifery Councils lists as a Nurse. (I have not asked her if she is a nurse).
But then again neither did (or does now), one of mum's NHS CHC nurse assessors. (At least not under the name she goes by.)
My understanding is that she is not entitled to work if she is not identifiable on the register.