The one and only time I saw them was on 4th April 1980 at The Rainbow, Finsbury Park, London. My first "proper" concert at 15 years old.
No Hugh Cornwell singing as he had been busted for drugs but various people including Ian Dury doing the vocals and Robert Smith of The Cure on guitar. Joy Division in support who I thought were brilliant but can't remember anything about the other support groups, who were apparently Section 25 and The Soul Group.
All in all a really brilliant night.