Other than the hot in-store deal at John Lewis before Christmas, this is by far the cheapest on-line price I have seen (and i have looked long and hard). Without quidco £339, but with quidco, the price is fantastic - £288.
Need to use the discount code ZEP15 (I linked from Quidco).
I end up buying ex-display in December and I love it.
It's now 20% cashback from bestbuy so price will be £272 if it tracks.