Who should stop and buy one? None other than Keith. Making a very brief reacquaintance before the legendary Dartford Railway Station meet. See this site too.
There is also another story about Mick Jagger reportedly saw Keith cycle past him when walking home from school. So, it took them a good 3 or 4 encounters to get it together!
I'd take these stories with a pinch of salt personally. It is'nt as if Dartford is a village and evreyone knows each other, even back then.