Found at John Lewis, Stratford Westfield.
In the clearance shelves.
I think John Lewis prices are throughout their branches, except for manager specials.
I'm pretty sure you can price match their own store if you're at one now, which isn't the Stratford branch.
If you missed out on this and still have a PS3, I strongly recommend you get this.
CeX are selling this second-hand for 15.
Apologies for lack of description, still shopping right now!
Shared Via The HUKD App For Android. INSTORE ONLY - LINK FOR INFO