18 Mar 1988 The Purple Helmets in London Down in the Sewer Artist: The Purple Helmets Date: 18 Mar 1988 Venue: Polytechnic of Central London City: London Country: United Kingdom .
15 Mar 1988 The Purple Helmets in London Down in the Sewer Artist: The Purple Helmets Date: 15 Mar 1988 Venue: Polytechnic of Central London City: London Country: United Kingdom The Purple Helmets - Sitting Pretty With - London Polytechnic of Central London 15 March 1988Watch this video on YouTube | Video: 1 .