Now I have to qualify this. These are the best ones according to my memory.
But, recently someone on BC posted a pic of the Au Pairs bassist at Alexandra Palace 1980. I remember going to that all-dayer, but not seeing the Au Pairs. So I just googled the line up.
I can't believe there was so many great post-punk bands, and I only remember John Cooper Clarke! I was 15 and went on my own. Here's the line up: