Anna, offer childcare in Sutton-in-craven BD20

We need someone to look after our 3 children on a Tuesday and Friday (and a Monday after school although this isn't critical). Our children will be 6, nearly 4 and 18 months old when the position starts.
The hours would be 8am until 5pm on Tuesday and 8am until 6.30/7.00pm on a Friday. Help on a Monday afternoon from 5pm until 6.30pm would be helpful whilst I take the eldest to a swimming class but not essential. We have a dog who is currently taken out by a dog walker on the above days.