Odd one for me, Boomtown Rats at Glasgow Apollo in October 1979. I bloody loved it!
I got a bit of a bug for live music though, that was followed by The Police, Queen and Blondie all in December 1979 at the same venue.
The good thing in these days is that all the big groups played in places like the Apollo, before they were replaced by the aircraft hanger type echoey arenas, and stadiums.
I remember seeing the Rolling Stones at Wembley, I might as well have been watching a video on the telly