Was looking for a t-shirt for my nephew and noticed it was 20% off all orders over £15, says it automatically makes the reduction at the final stage of checkout. Ends at 23:59 GMT tonight, 2/1/2015. There is also an advert saying you get an extra £3 off for signing up to the mailing list and using the code "EUROMAIL". I haven't completed my order yet so I don't know whether the code works along with the offer or whether you actually need to sign up to the mailing list.
Niche deal but hopefully someone gets some use out of it :)
UPDATE: Discount worked fine, however the EUROMAIL code failed, I was given a message saying it had expired, despite it being advertised on the EuroShop website. I checked out via Amazon, doubt it has anything to do with it but you never know, so if you can be bothered making and account on EuroShop, or already have one, you may want to try that to see if the code works.