I'm with Allen on this one - ACR definitely suited a smaller, intimate club-like venue although they did rock Finsbury. They probably played to the same size crowd at GMEX in 88 and in 86 at the 10 year punk festival bash (does anybody remember what song ACR opened with that day? The chorus went something like 'Don't let them/Get to you' but it didn't appear on Force or Good Together?).
I think the best two times I saw them was at Bham Poly in 85 and Kings College London in 86 or 87. The Poly gig was in a real small hall, absolutely packed, and I think nearly everybody had a whistle. It was also the Poly gig where I got my Live in America tape. Jez had his usaul attire for that period too - blue shorts, blue sweatshirt and the obligatory latin whistle. The Kings gig was just after Mickey Way came out - I remember Donald Johnson's drumming being particularly tough that night and, again, everybody had a whistle. It was strange as Jez anounced that 'And Then She Smiled' was going to be their next single - something that didn't happen.
A bit of a strange one was when they supported PTV at Hammersmith Town Hall - playing all the old stuff.
It was quite easy to get tape recorders into gigs in those days - just shove a walkman down the front of your jeans! - suffice to say, I've got a few live ACR tapes but, at the moment, I've got no way of copying them.