NS&I (National Savings and Investments) is one of the largest savings organisations in the UK, with over 25 million customers and more than £157 billion invested. We are best known for Premium Bonds, but also offer a range of other savings and investments to suit different peoples needs, including our Direct Saver and Junior ISA. All products offer 100% security, because NS&I is backed by HM Treasury. We work with Atos , who deliver customer-facing and back office services to our 25 million customers. The contract, which began on 1 April 2014, sits at the heart of NS&Is business and support our range of savings products and our payment processing services for government clients.