RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
N26 - The Mobile Bank
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Monzo - The bank of the future
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
Revolut - The easiest, fastest way to save for your financial goals.