Seeking after-school babysitter for 2 children in the UK

I’m looking for a reliable babysitter to help with after-school care for my two kids, aged 6 and 9. The role would involve picking them up from school, preparing a light snack, helping with homework, and keeping them engaged with activities until I return from work. Light household tasks related to the kids (laundry for their uniforms, tidying toys) would be a plus. We value Safety First, punctuality, and a friendly, calm approach. Availability on weekdays and a couple of occasional weekend hours would be ideal. Experience with children and references are preferred.