There are a number of reasons the discount codes won't work

Key reasons: 

• Code has been used before (they are single-use per customer) 
• The code is from a marketplace eg eBay  (discount codes from market places do not work on the website and visa versa) 
• Code has expired - We refresh them periodically 
• Code does not apply to the product (discount codes exclude annexes/awnings/bed flys)
• The code is being placed in the wrong section on the webite 

You can read about how to use the discount codes on our website by Clicking Here