I don't know any background to the picture - obviously it looks like the band were attending a Fancy Dress party... Gary Jordan has made the comment on Facebook that maybe they are dressed as ancient leaders (Don: Julius Caesar, Jim: Oliver Cromwell, Nod: Napoleon....and Dave Hill, umm...).
I have emailed Don with the pic. He has no recollection of it. But he has emailed it on to Nod and Dave - to see if they remember what was going on!
If anyone know the background - then please let me know.