Powering AI Growth: the case for (and caveats to) automatic approvals in AI Growth Zones
The Government is road-testing a simple bargain: if you put your hyperscale/AI-optimised data centre inside a designated AI Growth Zone (AIGZ), the planning system gets out of your way – unless a minister or metro mayor actively objects within a short window. It’s a deliberately radical pivot from case-by-case decision-making to pre-enabled growth by geography.
So, is this approach commercially rational or legally exposed? We believe that it can accelerate delivery for genuinely strategic sites – but only if government is disciplined about where zones go and how safeguards work.
Why this matters now
Three structural shifts got us here:
- CNI status. Data centres were formally designated as part of the UK’s Critical National Infrastructure in September 2024 (Data Centres officially designated as “Critical National Infrastructur). That doesn’t change day-to-day operations but it does hard-wire cross-government focus and priority on the sector.
- NPPF recognition. The December 2024 NPPF update tells LPAs to recognise sector-specific locational requirements and facilitate modern-economy uses like data centres (Revised NPPF Boosts Datacentres for UK Economic Growth). That is a real (and overdue) policy lever for plan-making and decision-taking.
- Grid reality. NESO/Ofgem’s connections reform is moving the queue from “first-come” to “first-ready and needed, first-connected” – with Gate-2 criteria that prioritise projects that are both ready and aligned with strategic plans needed to support Great Britain's energy goals (Client Briefing). If AIGZs are coupled to that energy reform, both consent and connection timelines begin to compress.
Layer on the AI Energy Council (whose remit is to address AI energy demands, explore clean energy for AI, and promote safe AI adoption in the energy system) and the AIGZ model begins to look like an energy-planning joint venture: zone the demand where supply can credibly arrive.
Parallel to AIGZ policy, a draft statutory instrument – the Infrastructure Planning (Business or Commercial Projects) (Amendment) Regulations 2025[1] – would add ‘data centres’ to the prescribed list under section 35 of the Planning Act 2008, clarifying a pathway for the Secretary of State to direct nationally significant data centre projects into the NSIP regime where appropriate. Sponsors will need to map AIGZ ‘automatic’ routes against potential section 35 directions.
What “automatic” really implies
The reported spine of the regime is straightforward: in-zone, qualifying data centre schemes would gain approval by default unless vetoed quickly; elements of EIA/habitats screening have also been reported to be potentially disapplied (although how this will work is still very much TBC).
In other words: light on local politics and speed by design.
Government has now published AI Growth Zones application guidance[2] (updated 13 June 2025) setting out eligibility and evidential thresholds – most notably minimums around power (e.g., 500MW by 2030), water, land assembly and planning pathway – which signals how ‘qualifying’ in‑zone schemes will be assessed in practice.
Where is this likely to land first?
Signals point north and east: Northern Lincolnshire has an AIGZ proposition live with a 16 m sq ft campus concept[3]; a “supercluster” proposal is also being touted in Teesside[4]. Expect government to start where land assembly, grid connectivity and political sponsorship already exist.
This is deliberate: AIGZs do not mean green-light everywhere. They form part of a spatial strategy to create investable certainty in a handful of places rather than requiring large-scale, strategic schemes to fight 100 local battles.
The application guidance also indicates a preference for locations with lower grid congestion, credible delivery teams, clear local support and demonstrable regional ecosystem benefits – criteria that will shape early selections
The legal/procedural edge cases (where challenges will come)
- The zone itself. If the government really does intend to disapply elements of project-specific environmental and nature assessment, its strategic assessment of the zone must be unimpeachable.
- Habitats and water. The quickest route to early litigation is overlapping AIGZs with protected habitats or water-stressed areas, which are fertile ground for legal challenges. The minutes[5] of the AI Energy Council themselves note water connection timelines as a pinch-point; regulators and the Royal Academy of Engineering have been pressing for better data/reporting[6]. To prevent AIGZ proposals from being held up by judicial review claims, the location of the zones themselves must be intelligently chosen.
- Intervention criteria. A failsafe is envisaged with the Secretary of State (and potentially metro mayors) expected to have powers to object to an approval[7]. A short objection window helps delivery but only if the guidance on when an objection can be made, and on what criteria, is crystal-clear and transparently applied. Legal challenges love ambiguity. The AIGZ application guidance provides the first public steer on the evidential standard government expects (power, water, land, planning and connectivity), which should in turn inform any intervention criteria and help reduce ambiguity.
Overall, our read is that these are design problems, not fatal flaws, and that the Government can fix them by choosing the locations of the zones strategically and above all by providing clear guidance.
Developer playbook (what to do now)
- Pipeline triage. Is your planned development within an AIGZ-candidate? If yes, press for inclusion and shape the evidence base (both commercial and technical) for the zone.
- Grid-first choreography. Treat consent + connection as a single workstream. AIGZs are likely to favour ready-to-go schemes.
- Help shape the guidance. Engage with government departments like DLUHC and DSIT to help shape how qualifying projects are defined.
- Keep a specific eye out for the following points as further guidance and legislative drafting lands: the definition of “qualifying data centre,” objection window length/criteria, and the formal interface between AIGZ and NSIP regimes – so sponsors can plan routes with certainty.
Local Planning Authority (LPA) checklist
If you’re an LPA, you are no longer a passive recipient of applications – you’re a co-author of zone investability: so this is your opportunity to safeguard strategic sites, align your emerging plan with support for data centres, and co-design evidence-rich AIGZs so that: (a) you get the growth-based schemes which benefit your areas the most; and (b) approvals by default don’t become conflict by default.
Crucially, concern has mounted during this Government’s administration that local interest is a bystander or blocker to central growth – but the creation of the AIGZs invites local insight and expertise. Now is the time to get involved with the location of these zones.
The bottom line
Automatic approvals inside AIGZs can be the right tool: they swap procedural friction and delay for front-loaded discipline and clarity.
If the Government nails zone selection and links AIGZs to connections reform, this could be the moment UK AI infrastructure moves from PowerPoint to power-on.
Two near-term anchors now exist. The published AIGZ application guidance, which operationalises evidential thresholds for selection, and the draft 2025 Regulations adding data centres as a prescribed business/commercial project under the Planning Act. Taken together these developments provide clearer routing between ‘in‑zone automatic approval’ and NSIP where national significance applies.
[1] The Infrastructure Planning (Business or Commercial Projects) (Amendment) Regulations 2025
[2] AI Growth Zones: open for applications - GOV.UK
[3] Council bids to bring Artificial Intelligence Growth Zone to Northern Lincolnshire - North Lincolnshire Council
[4] Stockton AI data centre plans approved - BBC News
Blyth and Cobalt Park named 'AI growth zones' but no decision on Teesside - BBC News
[5] AI Energy Council minutes: Monday 30 June 2025 (HTML) - GOV.UK
[6] Concern the UK's AI ambitions could lead to water shortages - BBC News
[7] Planning rules relaxed for big data centres in AI bill proposal
