Terms & Conditions. The 10% student discount is available in participating River Island stores in the UK and Republic of Ireland (excluding Voisins, Jersey. River Island is one of the UK's most recognisable high street fashion retailers. Always at the forefront of fashion, River Island offers customers the opportunity to. 2 other River Island coupons and deals also available for October Free Shipping w/ $+ Order · Get Offer Used 6 times today. 30%Off sale Additionally they have over stores across the UK and in other parts of the world. So check in often to avoid missing a mega bargain. The company also operates six online e-commerce sites, accepting four major currencies. Rate River Island Average rating: 3. How do you use discount codes at River Island? Once you find a River Island discount code, you can apply it when at the checkout stage of your purchase. Free Delivery Why not save a little extra for your pocket on delivery fees? Submit Code.