Probably not the place to ask, but a friend of mine is interested in reenacting after following me to Detling in the summer at short notice.
He unfortunately wants to reenacting Russian but can't find anywhere that sells uniform or helmet. I said I'd ask you guys whether there's any suppliers in the UK that sell repro Russian gear or in fact if anyone does make repro Russian stuff?
Ost Front
try Ost front, there an american company http://www.ostfront.com or check http://www.ww2militaria-kcs.com in the coming months as they are doing an affordable russian range soon.