I found this among some of my Dad's old stuff. It's a picture of him on the cover of 'PIG' magazine, most likely from his student/doctoral days in Hull. At first I thought it might have been from the '68 student revolution in Paris, but the guy on the left is unmistakenly an english 'bobby', definitely not a french 'flic'.
I'll try to find a pic of my English grandfather and post it sometime soon. (he was a policeman in Lambeth, South London)