Here's how to use Promo Codes when shopping at Marks Electrical: You need to log in to your existing account at markselectrical.co.uk or create a new account of your own; then, to select a product, you can browse the markselectrical.co.uk product page to select a product and add it to your cart. Occasionally, they will offer you discounted products up to 85%. Next, it will jump to the payment page, select Coupon Codes of your Marks Electrical on the payment page, and complete the payment. Also, welcome to this promotion from Marks Electrical on October: £50 Saving Orders Atks Electrical.