As the title suggests just picked up one of these from Sainsburys. They also had the BT Synergy 4500 for the same price. However, I thought this was far better looking and goes very well with the TV and TV bench :)
I've had a quick search and you can only pick up refurbs at this price (plus shipping), so seems like a good deal. Especially for an instore purchase.
(If you need two, it oddly works out cheaper to buy two single packs rather then one twin pack).
P.S. Be gentle this is only my second deal post :)