According to Playstation no UK retailer actually broke release - no copies had yet reached retailers and they were in transit when one of the vans was violently assaulted and the shipment was stolen. There are a bunch up on eBay for around £200. Sad.
However, street date has been broken in various places around the world by a few small retailers, so people legitimately do have the game. There are spoilers everywhere guys, be careful. Especially avoid YouTube comments. There's a short one minute gameplay clip of just some random part of the game, and people in the comments are talking about the legit ending.