looking for after-school nanny

I'd like to know what do parents usually do for their kids in Reception in school for after school hours. There is no after-school club available at this stage in my son's school. And I have been looking for a nanny for evening 4 hours but just haven't got any response.
I have never called for a childminder. And the thought seem to be so tiring for such young kid to go to school till 3:00 and then picked up by childminder and then come home at 7:00. Not sure what to do Pls suggest. Thanks!