6 - I used to walk to school with another young kid in a quiet place in scotland, but got driven in MK until 11.
10 - There wasnt a shop anywhere near until then, but id cycle to my friends house a few streets away from about 6.
10 - Just a guess, might have been younger.
1980
At 11 i went to stay with my dad for a couple of weeks when he was working in Shetland and walked about a mile to the leisure centre and there were no staff about, left some money on the front desk, got changed and went swimming in the pool, at some point a member of staff came in said hi and left again.