Our nanny is pregnant, this is now an established pregnancy and we have had sight of her MATB1. She disclosed this pregnancy the week after we employed her - I was and remain really pissed off by this, but accept that it's a risk you take when employing one.
We had discussed the possibility of the nanny returning after maternity leave to provide after school care for our four children and allow her to bring her own baby. I am becoming increasingly uncomfortable with this as it becomes more of a reality. Our children are all under 10, our eldest is 9 and has ASD so complex needs that need a lot of specialised care. 2 are toddlers aged 4 and 2. I do not feel that any nanny could provide adequate care in these circumstances if they have their own newborn with them. Nanny wishes to return to work when baby is 6 weeks old 
As yet we have been unable to arrange any maternity cover. It may be possible for me to change my hours short term to cover myself but this won't be possible permanently. I'm facing the possibility of having to quit work if we don't accept nanny back as there seems to be no alternative, but I am just not OK with her coming back in this capacity.
Morally I feel that if we make that decision I will need to tell her as soon as possible. What is our legal position here? Presumably if I have to leave work myself we can legally make her redundant as the position really won't exist - but what if I don't? If I can, on the off chance, maintain the reduced hours can redundancy still apply? I recognise that as we've previously verbally agreed I can't offer anyone else then position permanently 