Yes lots of childminders provide wrap around care this can be before or after or both. Ask around your school x
I've found in my area that not many childminders are doing this, due to the wrap around care schools now provide. You'd be best asking a few childminders
There are services like this but they will prioritise a child who joins them for breakfast just because of the climate. Try this site https://www.childcare.co.uk/ you can add preferences to your profile and get a great list of local providers.
UK only btw