Sam I was about 5 (late starter). For the life of me I can't remember the bike or the occasion, but I do remember always wearing my wellies when I rode and my Mum getting the hump as I used my feet to stop rather than brakes (funny how things have turned full circle!) which wore out the soles of me wellies.
Anyway, here's a pic of me on a classic machine. Taken last week.
you obviously had your growth spurt early?!? you look tall then.
you obviously had your growth spurt early?!? you look tall then.