Hi
Not aware of any Bears Authentics in this country right now. The only ones that have ever been produced by Reebok UK have been for the teams that have visited the UK during the International Series.
So we're talking... Dolphins, Chargers, Saints, Giants, Buccs and Patriots (though not come accross any of the Patriots yet)
I will however see what I can find for you from my US suppliers and let you know.
PM me your budget for an Authentic and I'll let you know what, if anything crops up.
kind regards
Matt