Marzia, is looking for shared childcare in Surrey inner northwest

My husband works from home but I work in an office. We will need a nanny to do a nanny share with a friend of mine who will drop off her infant in our home. I just want to get an idea of how much it would cost. There is no expectation for the nanny to do any household chores. They will only be taking care of the babies, feeding them, changing them, etc.