Quite a coincidence that you live here too! There are more Epic Armageddon players in and around Bristol (maybe 10 or so of us) than anywhere else in the UK these days. Couple of Bristol epic tournaments each year too and some of us that drive up to tournaments elsewhere.
Yeah feel free to come along to the tournament at BIG to have a look and chat to us. It's an open gaming store and anyone can come by.
The new Legion Commander models are a third or more larger scaled than old epic models but still fine to use for Epic Armageddon too. Plastic AT titans and knights are commonly used at the tournamernts.
Do you ever go to the Bristol Gaming Collective games club in St Phillips?
https://www.facebook.com/BristolGamingCollective/ I only find time to go occasionally but they seem to play more specialist games than most clubs (more epic, mordheim, necromunda, etc). Not sure about BFG but maybe some do.