I have the ch4 video, it was filmed at the Town&Country club 1988 (London). EMI might also have filmed the Hammersmith 1986 gig (They for sure TAPED the whole thing!).
I can tell you, there is A LOT of unreleased SAXON videos in the archives!! I KNOW they also filmed more then one gig on the UK tour 1983, Cardiff for sure, and nottingham was released ("Live"). Then when they were doing the "Live innocence (Madrid)" video, Barcelona 1985 were filmed too!!!
I also a few years back got a mail from a guy who claimed he had footage from the 1982 tour, which was supposed to be released as a Tv-documentary, with profiles of all in the band too. Same goes for the "Bombers&Eagles Tour" 1992.
But then i never heard from him again.....
There were about 2-3 (part of) shows aired on german tv in the early 80´s, i have thoose. Argentinaian tv aired a 50minute show in 1992, have that one too.
The rest is all footage done privately by fans, and it excisting quite a few shows between 1984-2000! I collect them myself!