Vaccines

Hi

Hey there I'm hoping somebody can help me out with my question.
Somebody clean for has asked me to be their carer because they are familiar with me.and it saves strangers coming in and out.
I am familiar to care although I've been out the loop for a couple of years.
My question is can you you care for people on a private basis in their own home when you are unvaccinated?
He said he's happy with it but I've asked him to check with his family while I check the legalities of it.
Anyhow I would like to help the family but only if I'm legally obliged to do so.
I really appreciate any help on this.