The cast of the Pirates of Penzance c. 1981.  Gill Burns front row with pirate hat and gun as Ruth, the piratical maid of all work,
Derek Mahon (German), the pirate captain, Terr O'Hara as Frederick and Karen Dutton as Mabel. 

Also to be seen are Mike Baker (Biology), John Daunt (Latin) waving a sabre behind him (both top left), Harvey Sprake (Maths), partially
obscured by sabre next to Daunt and front row 4th from righ, Frank Naylor as policeman.