My daughter is 15 and a pretty experienced babysitter (been doing it two or three years, and has looked after her little brother when we go out since she was 11). She has been looking to earn extra pocket money and I've set her up with a mum at my local primary school to pick up her two kids (6 and 10) one day a week, walk them home (about half a mile) and look after them until parents get home at 6.
What might be the going rate for this? We are in South London. She charges £9 an hour for babysitting but I feel this is a more responsible job. £11 hour?