@Senoufou: In the late forties early fifties, we as children did all sorts of unsupervised stuff (camping in the woods, lighting fires to roast spuds, cycling for miles, going on the train for a 5hr journey alone to visit an auntie etc, all at the age of about eleven.) Parents in those days just let children get on with it, and we were resourceful.
Nowadays, Health and Safety would have a fit!

Pre-war (which means I was 3 years old) my mother would take me down to the bus stop, put me in the charge of the conductor (remember those?) for the journey 4 miles up the valley, where my Nana would be waiting for me. I don't know how this was arranged - neither of us had phones in the house.

I still remember the bus driver & conductor's names - Fred Field & Will Jones!

Phil