UK Budget 2026: British AI security boosted by new data centre plans and £700m package

Chancellor John Healey has revealed plans to prioritise critical data centres for electrical grid connections, as the British government seeks to keep sensitive artificial intelligence (AI) data within the UK and strengthen the nation’s wider digital infrastructure.

Announced during the 2026 Budget on 28 October, the new measures include a new British Data Centre Covenant that is designed to link priority access to the electrical grid with commitments from operators to support local communities, create new jobs and protect key water supplies.

The announcement signals Westminster’s intention to make data centres a strategic national asset as the adoption of new AI systems continues to accelerate across the public services, defence and industrial sectors. “Built on sovereignty and security, I want to ensure that the British people can benefit from the huge potential upsides of AI,” Healey told Parliament, according to Reuters.

Healey said the initiative aims to keep sensitive data used by public services and the UK Armed Forces in Britain, reinforcing the vital importance of secure domestic computing capacity as AI becomes increasingly embedded into critical infrastructure and operations.

Powering the UK’s AI ambitions with priority grid access

Under the proposed covenant, data centre operators would be expected to demonstrate tangible benefits for the communities hosting their facilities in return for priority grid connections. Where necessary, Westminster would also allow operators to build on-site power generation systems to help meet their individual energy requirements.

The policy addresses a significant infrastructure challenge facing the UK’s ambition to expand its AI capabilities. Data centres require substantial and reliable electricity supplies, while competition for grid capacity and lengthy connection times can delay investment and constrain development.

The Chancellor announces a ‘sovereign AI unit’ in the Budget that will channel government investment into strategic British AI firms, plus a new deal on where sensitive NHS and military data is kept. #Budget2026 https://t.co/YOd4yUSrpd

— The Spectator (@spectator) October 28, 2026

By prioritising strategically important facilities, the government aims to accelerate the infrastructure needed to support AI innovation while strengthening national resilience.

However, priority access will need to be balanced against the demands of other electricity users, the cost of network investment and the environmental impact of large-scale computing facilities.

Balancing data centre growth with local benefits

The covenant also reflects the need to ensure that the economic benefits of data centre investment are shared locally. Commitments covering employment, community investment and water protection are intended to help align UK infrastructure expansion with local priorities.

The approach comes as the UK government seeks to encourage business investment and growth while strengthening energy and national security. The wider 2026 Budget announcement sets out new measures to support British businesses and establish a more secure long-term energy system, according to the Treasury.

For the aerospace, defence, space and wider advanced engineering supply chains in the UK, secure domestic digital infrastructure is now increasingly relevant to the adoption of AI-enabled technologies, data-intensive engineering and other advanced capabilities.

Keeping sensitive information within UK-based infrastructure could help organisations meet security and resilience requirements, but the location of data alone does not guarantee its security; governance, access controls and cyber security remain absolutely essential.

The announcement also includes an AI Challenge Prize to encourage the use of AI in public services, alongside funding to support workers adapting to the rapid technological change.

The success of the data centre policy will depend on how the covenant is implemented, how priority connections are allocated and whether operators can deliver the promised community and environmental benefits.

For the UK, the strategic challenge is clear: expand the computing capacity needed to compete in the AI sector while ensuring that the infrastructure supporting critical national data remains secure, reliable and sustainable.

New £700m AI package targets greater security and sovereign capabilities

The data centre announcement forms part of a wider £700m AI investment package that was unveiled as part of the Budget, which the government says will help address emerging risks while unlocking AI’s potential to improve living standards, strengthen national security and support workers.

The package includes an additional £120m for the AI Security Institute to strengthen the UK’s ability to assess and respond to AI-related threats. A further £40m will establish a national capability to investigate and respond to security incidents involving agentic AI systems – technologies capable of taking actions towards defined goals.

To strengthen domestic AI development, Westminster is allocating an additional £140m to the Sovereign AI Unit. The funding intends to help promising British AI firms scale up and maintain a meaningful presence in the UK, supporting the development of sovereign capabilities rather than relying entirely on overseas providers.

A further £30m will support pilot partnerships with local authorities and regional bodies – beginning in West Yorkshire, South Yorkshire and North Yorkshire – to develop locally led approached to AI adoption.

While the government has not specified a separate monetary allocation for the covenant in its 2026 Budget announcement, it instead focuses on enabling strategically important data centre projects to progress while ensuring that local communities share the benefits.