Jarvis and co had finished their A levels and left City School but came back to play with the Electric Armpits. The concert was videoed (!) and I remember Jarvis returning again to see the screening. Sadly the video was loaned to a member of the Armpits whose parents taped Corrie over it.
Also playing were In A Bell Jar.
The singer of the Electric Armpits wrote a book about the times with many references to Jarvis - details here.