NS&I Tender for Business to Business Outsourced Services

To procure a strategic supplier of managed services to deliver B2B on behalf of NS&I.

Business to Business Outsourced Services

Contract summary



    • Information systems – 48810000
    • E-mail system – 48811000
    • Financial information systems – 48812000

Location of contract


Value of contract


Procurement reference


Published date

28 September 2022

Closing date

28 October 2022

Closing time


Contract start date

19 June 2023

Contract end date

31 March 2027

Contract type

Service contract

Procedure type

Competitive procedure with negotiation (above threshold)

Contract is suitable for SMEs?


Contract is suitable for VCSEs?




This notice is published to commence a procurement event to award a new contract for its Business to Business (B2B) outsourced services.
This package of work is part of NS&I’s Rainbow Programme, and it will procure a strategic supplier of managed services to deliver B2B on behalf of NS&I. The B2B services are responsible for the delivery of government schemes, including Childcare Services, Help to Save, Help to Buy ISA, Mortgage Guarantee Scheme, and the Court Funds Office.
The contract is offered to one supplier for a period of 3 years following service commencement, with an initial up to 9 month transition period to ensure smooth service commencement from 1st April 2024. At the end of the contract, the B2B services would transition to the Rainbow Programme operating model.
Please note that the award of the contract will be subject to approvals following the procurement process.
National Savings and Investments (NS&I) is an Executive Agency of the Chancellor of the Exchequer. It is one of the UK’s largest retail savings organisations with 25 million customers, more than £202 billion funds under management, best known for Premium Bonds but also offering a range of savings products. NS&I raises financing for Government, by offering secure retail financial savings products, as an alternative to raising funds on the wholesale market.

NS&I’s core services are currently provided by Atos IT Services UK Limited, which manages sales processing and customer servicing, and IT and infrastructure services. This contract will end on 31st March 2024. NS&I has started a significant transformation of its outsourced services, called the Rainbow Programme.

NS&I provides services to other government departments via B2B offer, called Government Payment Services (GPS). NS&I GPS offers modern, secure and competitive banking and payments services to all government departments, agencies and public sector organisations. Current B2B services include, Childcare Services (consisting of 30 Hours of Free Childcare, Tax-Free Childcare), Help to Save, Help to Buy ISA, Mortgage Guarantee Scheme and the Court Funds Office.

More information


Previous notice about this procurement

Business to Business Outsourced Services

  • Opportunity
  • Published 28 September 2022


Additional text
B2B will be delivered predominantly in its current form and NS&I expects the future supplier to transition the existing solution minimising disruption and maintaining continuity for the government schemes that B2B manages. These are:
• Childcare Services (consisting of 30 Hours of Free Childcare and Tax-Free Childcare)
• Help to Save
• Help to Buy
• Court Funds Office

Requirements across the schemes include:
• Serving Customers
o Meeting the service needs and providing support to the end users of the schemes managed by B2B
o Engagement with B2B clients in order to operate and eventually transition the solution to Rainbow by the end of the contract
• Operational Management
o Process transactions – The processing of transactions into, out of and between customer accounts
o Manage customer access and accounts – The management of customer accounts and their access to these via a number of channels (predominantly digital) with corresponding support as required
• Manage Stakeholders – Supporting NS&I relationships with (and obligations to) key external stakeholders, including the client government departments and HMT as NS&I sponsor.
• Organisation – The provision of key enabling capabilities for the services, including for managing people, resources, technology and facilities.
• Manage Partners/Suppliers – The management of suppliers and partners, related to the B2B provision.

The supplier will be encouraged to maximise the use and efficiency of the existing technology to deliver B2B services throughout the life of the contract.


How to apply


Follow the instructions given in the description or the more information section.


About the buyer


Contact name

Dorothy Fox


1 Drummond Gate