Transmasters UK can be a elusive beast. Always was. Outside of tracking down a physical copy from someone, I don't think you'll have much luck, unfortunately, but I'll add a little to your quest.
This archive of Alt.Toy.Transformers has a little bit of discussion about the interview from Simon Furman from Transforce 2000, mentioning how he saw Beast Wars as part of the comic universe, and didn't consider Beast Machines canon.
groups.google.com
And another interview with one of the guys who ran Transforce and mentions the Transforce 2000 cover. It's apparently a redone version of Marvel's Transformers UK #1, and similar art was used in some old region 1 DVDs, but I can't find ANY images of the actual Transforce 2000 cover in question.
The article Paul from Transforce in 2003 was published in the category Conventions. TransForce - Paul Cannon Interview, 29th May
www.transformertoys.co.uk
There's other mentions of Transforce in Transformers At the Moon's archives. You can try your luck there.
EDIT: And I found the cover!
So, at least you should know what you're looking for.
There WAS a exclusive comic and book at Transforce 1999. But, it looks to be all about TMUK proper. Although it does have a interview with...Bench Press? Who? (More on that later)
Transforce 2002's exclusive seems to be Simon Furman's Alignment. Transforce 2001 only had the first part of Alignment, but this was both parts combined. (Transforce 2001 is ALSO where Eugenesis first released)
Transforce 2002 is coming! Get ready for the UK's foremost Transformers convention. With all the activity around Transformers lately and Rob
tformers.com
And Transforce 2004 DEFINITELY had a collection of sorts. The Last Odyssey. Which was a fanfic collection written by a bunch of TMUK mainstays. (Also...a exclusive video game collection of Transformers themed versions of classic arcade games?)
It's not really of much interest to people who aren't familiar with TMUK, but it was probably the last hurrah for the "golden age" of TMUK. And...from the looks of the website, things went wrong, unfortunately for them.