After School Nanny Share

I'm looking for an Ofsted registered nanny (share) to look after an 8-year-old girl in the after school hours - picking her up from St Gilda's in crouch end.  If you're a nanny with availability Mon-Thu (although I can be flexible), who feels this for you, I can join forces with another parent in the same school (with a 7 yo girl) to make it work.

Or maybe you already look after one family and could take another child on - or perhaps you're a family and already have a nanny but are looking to reduce costs/have another playmate, I'd love to hear from you.