Hmmm. I've no idea what this refers to. I live in Coventry, and have for years. If it was 1987, the parade was about 30-40k, absolutely at the very most. There are far more non-Coventry fans (all teams combined) than Coventry fans, in a city built on migrating workers for the motor and mining industries, now all basically gone. Celtic are really popular, of course.
They are easily the most fickle fan base known to humanity. Anyone could have got a ticket for their semi-final versus The Rags, yet the narrative became about their wonderful support. A week or so later, they played Ipswichcat home, a pretty attractive fixture too. Literally a half-empty stadium. Really poor. The reality is that the shirts come out at the first sign of a little bit of success, then disappear the next day.
I know a woman who goes home and away, she is an incredible fan. I also have family members, in-laws, who once bemoaned the owners on the day they slipped into the 4th tier...they live a mile from the stadium...and didn't go to games. I just sipped my beer, and nodded. Went to Wembley though, of course they did. With the family cat, auntie Hilda, and a boatload of jester hats.
Phill, you must remember school? Leeds, The Rags, Liverpool, etc. And us two Blues.