Sign up now and start saving on your purchases at the Derwen Garden Centre! Get updates about what great things we're offering! Just show a copy of our welcome email to the till and we'll give you a card for future use. The Derwen Loyalty card is a point based system. For every purchase you're collecting points. On average each £1 = 3pts. Apart from email address we require your name and post code - that's used only on our systems - and only when you forget your card - we can look it up so you still collect points!