I am just trying to work out which code is best at the moment! LOL. I also have the buy 3 and get 4th for £1 but you have to pay delivery, although returns are free. I also have £15 credit with them! I think I need a maths degree!
Thank you duckyfuzz <p.s. your name always makes me smile, reminds me of the game fuzzyduck that involves marshmallows>