Fill your boots:
50% off certain products at Thorntons.
8% Quidco, plus use code XBN6 for 25% off on top.
Equivalent to a minimum of 66% off original price, depending on how Quidco tracks.
Delivery is £6.95 if you want it delivered by Christmas though.
Edit (23/12 @ 15:30) : Some mixed messages over the Christmas delivery deadline for this, but have to assume it's order by 4pm today for delivery tomorrow.
Edit (23/12 @16:30) : Order by phone before 5pm for delivery tomorrow.