We are only able to authorize discount codes that are available on our website. We don't currently work with third parties regarding discount codes. 

If you have found a discount code on a third party website and you are unsure if you are able to use it, please feel free to check this with our support team by calling on 01977522021 or sending an e-mail to support@pebblegrey.co.uk.

Pebble Grey Support Team