After School Nanny in Balham, London

Balham SW17
A wonderful family in Balham are searching for a brilliant after school Nanny to join them ASAP, as their Au pair/Nanny of 5 years is now moving on.
You will be caring for a 10 year old boy and 8 year old girl. Both go to the same school, so depending on what clubs they are attending, the pick up will be between 3:30 and 5:00 each day. It would then be supervising homework, making snacks and tea, playing games, perhaps a trip to the park, until Mum or Dad get home at 7:00pm.
The school is a 25 minute walk away, or faster if take public transport.
Monday to Friday 3:30-7:00pm. Some flexibility for some extra hours in the holidays would be appreciated, but the children often do enjoy going to camps.
The family have a cat.
Location: Balham SW17
Experience: 2+ years experience with children of a similar age
Salary: £18+ gross per hour
To start: ASAP
Permanent Position