This is exactly the role I've had for other families, particularly one in Putney with 3 children 11, 14 and 17. However I was living in. Would you consider a live-in position for the right person? Given the small number of hours you require, the room would be in lieu of pocket money. 
If interested please find my details here: https://nappyvalleynet.com/community/vi ... p?t=131746

Hi there, we’re looking for a friendly housekeeper to help a busy family keep the wheels turning at home.

Role would involve washing, tidying, running errands, basic cleaning. If you enjoy cooking then that could be part of the role too. Our children are 10, 12 & 15 so don’t really need a nanny, but it would be great if you could hold the fort when no other adults are around.

Flexible on hours, but looking for around 10-16 hours in total to be spread across Mon-Thurs. Competitive rates (PAYE basis).

Happy to answer questions about the role.