you can apply for the code by e-mail if you join online as well, i did it the other day when i went and showed them the mail on my phone and got 10% off.
I contacted them about an item that was out of stock & mentioned if they did a discount for TLB the chap who emailed back said yeah but we want a banner on the sight, I said I would forward the info to the forum owners & then deleted it Bit cheeky seeing as you can get 10% by applying! Glad I binned his email now!
I went in and asked about club discount and showed them my membership number for another club on my phone and they gave me a 10% loyalty card to show
.....but don't forget cool air also give 10% for us i haven't set it up yet but have used them a lot, and there alright