Reminds me of _Journeys Into the Outside_ by Jarvis Cocker.

And that reminds me of the time when I saw him in passing in a corridor at King's Cross Thameslink and my hand was halfway up into a wave before I realised that he wouldn't know who am.

I had the same experience when I ran into him at a bar backstage at a Blur gig in the mid 90s. My dad was friends with his dad in 1960s Sheffield, but since the bloke walked out on his family when Jarvis was 7, it wouldn't have been much of a conversation starter.