GDS ramps up ‘capability delivery’ for One Login with £44m deal


The Government Digital Service has awarded the biggest commercial agreement yet in a series of deals with large consultancies and services firms, which have won contracts worth a collective £150m

The Government Digital Service has ramped up spending with its core “capability delivery partner” for the One Login programme, with the award of a new multimillion-pound deal.

At the start of this month, the digital unit entered into a two-year engagement with Deloitte. The agreement, which runs until 1 August 2026, is valued at £44m.

“The contract is for the provision of a capability delivery partner to support the delivery of the GOV.UK One Login digital identity solution,” the accompanying procurement notice said.

The contract joins an existing – and seemingly identical – two-year deal with Deloitte, which runs until 14 December. That agreement is valued at £9.5m, while a third engagement with the consultancy, also under the banner of a “capability delivery partner” for One Login, expired in July, after a year in effect and £16.5m spent.

The latest deal takes the total worth of the One Login contracts awarded to Deloitte since summer 2022 up to about £70m.


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To add extra “capability” to the delivery of the new government-wide sign-in system, GDS also currently has in place engagements worth almost £30m with PA Consulting, including a deal specialised on user-centred design.

Other commercial partners include BAE Systems Digital Intelligence, which holds a £19m agreement related to fraud risk management, and Capgemini, which was last year given an £8m two-year contract to help “develop and embed DevOps mindset and culture” across the One Login programme. 

Also last year, outsourcer HGS was picked for a £17m deal to deliver a user-support contact centre and Mastek was signed to an £8.5m engagement to provide a technical service desk.

The collective value of these nine deals with consultancies and services firms equates to 50% of the new tech platform’s overall estimated delivery cost of £305m.

The latest – and biggest – of these contracts was the second major deal GDS has awarded to Deloitte in recent days, having also signed a potential £50m deal with the firm to support the delivery of the new GOV.UK App.

Supported by One Login, the new system will, for the first time, provide citizens with a single mobile app for accessing hundreds of services delivered across departments.

Sam Trendall

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