Who played the Minder theme?

[Drombone]

I'm not sure where to put this, but as it's a 'who played this' Q, here seems as good a place as any.

I'm also acutely aware that this is likely to mean nothing to non-UK members.

Dennis Waterman died today. He was a British actor, perhaps best known for his role as Terry in Minder, a TV show that ran from the 70's for maybe 20 years

This is the theme tune.

https://youtu.be/JKCH3RBlnDE

Who's the trombonist?