This is Joe Mackay getting things swinging along at the Unicorn sometime around the late 80's.
The 2 guys in the background also played for another Joe at the time, Joe Public.
A wee reminder that you can hear Joe Mackay's guitar work in full flow on a recording by John Huband dating from 1973 that I posted on Retro, May last year. Just use the search box to track it down.
Photo by The Bear.