Definitely the cheapest price I've seen so far. Thought it was a great price from the previous deal (http://www.hotukdeals.com/deals/tekken-6-limited-edition-xbox-360-1/762603) but I didn't buy it back then as I was low on cash. Got paid today and checked again and lo and behold, it was cheaper!
Unfortunately this deal if only for the X360 version of the game and not the PS3.
Also, don't forget the code B4U for a further 2% discount, combined with Quidco or Topcashback for a further discount, reducing it to £13.17 or £13.03 respectively!