Part time role in Richmond

We are seeking a kind and experienced nanny in Richmond to help with after school activities, homework, serving dinner, child related tidying and helping mum to get 3 children organised for bed. Children aged 1, 3 and 6. Ideally looking for 3-4 afternoons/evenings (including Friday) from after school until 7.30/8pm, but flexible with days and hours for the right person.