I often go to the International - not normally a great deal of interest to the discerning shooter - the odd sight/scope - not normally many 'live ones' although the last time I went (the last time but one I think) there was a nice looking L42 with bits - no doubt the one you mention bigduke!
Never seen a smle sniper there tho - even a blocked up one, so it would have been interesting to see, esp the scope.
Re deacts - I'd love a bren, but with regards to buying them, it does seem a bit pointless as I usually feel - what would I do with it? In my job/social circle/general environment (this isn't unusual at all in the UK) anyone owning a gun is regarded as being unhinged/strange/potentially about to go 'postal' (as the septics have it) so sticking even a deac on the wall probably isn't a good idea... Sad but true.