NS&I has confirmed that it is to extend its operational services contract with Atos by an additional three years after the original contract period from 2014-2021.

The extension was signed on 28 March and means that the relationship between NS&I and Atos will continue until 2024.

NS&I says it will “build on the benefits to NS&I’s customers that have already been delivered by our partnership with Atos”.

These include a refreshed website, 24/7 contact centre, and the introduction of social media channels and web chat.

The partnership has won a number of awards for its customer service, including best in the Banking & Financial Sector at the Top 50 companies for customer service awards for the past three years.

NS&I says it will continue to work with Atos “to refine its customer service offer, with improved digital capability and a focus on ensuring the business continues to operate efficiently, using an infrastructure that provides value for money for taxpayers”.

The value of the contract extension is estimated to be approximately £305m for the additional three years, in nominal terms.

The contract value from commencement in 2014 to the new extended expiry date of 2024, is approximately £1.1 billion.

NS&I said the current contract with Atos (2014-2021) will save the taxpayer over £400m compared to the original contract (1999-2014), which in turn was estimated to have saved over £500m compared to arrangements before 1999.

Over the period of the current contract with Atos from 2014-15 up to 2017-18, total funds invested with NS&I have grown from £106bn to £157bn.

Ian Ackerley, NS&I chief executive, said: “The three year extension to the operational services contract means that Atos will continue to deliver customer-facing and back office services to NS&I’s 25 million customers. It will help NS&I to further enhance our customer offer, while at the same time using our insight and expertise to deliver for other parts of Government and deliver value for money for taxpayers.”

Adrian Gregory, Atos global senior executive vice president and CEO UK&I, said: “In a number of ways, our long-standing collaboration with NS&I is a business transformation exemplar.

“We are proud to renew this partnership and to continue to build upon the significant successes of the NS&I transformation journey.

“We will achieve this together by delivering additional enhanced customer-focused services, underpinned by a blend of talent and innovative technology, helping ensure NS&I is well positioned for the future.”