Starting tomorrow JJB will have 20% off all Junior Clothing and Footwear. (Except the new Adi Preds which are already 25% off.) In most stores this will of started this afternoon but will be in every JJB tomorrow, not sure about online. Even the stock that is already 50% off has 20% off until Monday night! This includes replica items and base layer products (Under Armour, Nike pro etc)
You will STILL qualify for the free voucher(s) if you spend more than £30 or £50.
EDIT: online too!