I am looking to buy the camera kit above and saw this deal on Dixons Tax Free at the airports. It is selling for £731.91 before the Canon £140 cashback making it £591.91.
The next cheapest one available is on Dixons online for £839.99 (and also 3% quidco and £140 cashback) making the total £674.79. So you can see the savings is really great! The only disadvantage is that you need to be flying through one of the airports with Dixons Tax Free.
I have called them personally at the Belfast International Airport and they assured me that I would not be taxed upon entering the UK as long as I am flying within EU. They also confirmed that the Canon cashback is still applicable.