Buy a new pair of prescription glasses in a Vision Express store, or join their contact lens plan, and you’ll receive a free pair of sunglasses from the Seen range, worth £29. Or, if you want to choose from the designer brands, you can use the £29 towards your free sunglasses. Plus, you’ll get 50% off any lens upgrades for your free sunglasses, including prescription, varifocal, tinted and more.