Planning appeal decision
Manor Farm and Land North of Wraysbury Reservoir , Poyle Road, Slough, SL3 0AA
Planning appeal 3366043 at Manor Farm and Land North of Wraysbury Reservoir , Poyle Road, Slough, SL3 0AA (Slough Borough Council) was decided (unknown) on 16 December 2025 by Inspector Rose D, following an inquiry. The main issue, as the Inspector framed it: Whether the proposed development is inappropriate when assessed against policies in the Development Plan and the Framework.
Demolition of existing buildings and redevelopment to comprise a Data Centre (Use Class B8) and Battery Energy Storage System (BESS) with ancillary substation, offices, associated plant, emergency backup generators and associated fuel storage, landscaping, sustainable drainage systems, car and cycle parking, and new and amended vehicular and emergency access from Poyle Road and other associated works
- Authority
- Slough Borough Council
- Appeal type
- major · Planning Appeal
- Procedure
- Inquiry
- Development
- employment-industrial · Major general industry/storage/warehousing
- Inspector
- Rose D
- Postcode
- SL3 0AA
Main issues, as the Inspector framed them
- Whether the proposed development is inappropriate when assessed against policies in the Development Plan and the Framework
- If inappropriate, the effect on openness and conflict with Green Belt purposes (a) and (b)
- Any other harm including landscape and visual effects, the Strategic Gap and Colne Valley Regional Park, availability of alternative sites, deliverability, effect on future Heathrow expansion, and effect on heritage assets
- What considerations weigh in favour of the development, including need, locational requirements, deliverability, economic impact, employment, skills, social benefits, climate change, biodiversity net gain and accessibility improvements
- Whether other considerations clearly outweigh any harm to the Green Belt and any other harm, and whether very special circumstances exist
- Whether the proposal would be in accordance with the Development Plan
What decided it
The overwhelming and unmet need for hyperscale data centre and BESS capacity in the Slough Availability Zone, combined with the absence of any suitable alternative site and the site's classification as grey belt land not constituting inappropriate development.
The substantial and significant benefits of meeting an overwhelming unmet need for data centre and BESS capacity, together with economic, climate and landscape benefits, outweighed the moderate and lesser harms to character, the Strategic Gap, the Colne Valley Regional Park and HAL's aspirations, and outweighed the less than substantial heritage harm to two listed buildings, such that the presumption in favour of sustainable development applied and permission was granted.
What the Inspector cited
- Development plan policies
- Core Policy 1 (Spatial Strategy)Core Policy 2 (Green Belt and Open Spaces)Saved Policy CG1 (Colne Valley Park)Saved Policy CG9 (Strategic Gap)
- National Planning Policy Framework
- Paragraph 11Paragraph 49Paragraph 57Paragraph 58Paragraph 85Paragraph 86Paragraph 87Paragraph 110Paragraph 115Paragraph 142Paragraph 143Paragraph 153Paragraph 154Paragraph 155Paragraph 187Paragraph 212Paragraph 215Paragraph 232
- Judgments
- Mole Valley DC v Secretary of State for Housing, Communities and Local Government [2025] EWHC 2127 (Admin); Helioslough Limited v SSCLG [2011] EWHC 2054 (Admin); Goodman Logistics Developments (UK) Limited v Secretary of State for Communities and Local Government, Slough Borough Council [2017] EWHC 947 (Admin)
How the Inspector dealt with each one is set out in the app, in order: the development plan, national policy, housing land supply, other considerations and the planning balance, beside the letter.
See how each was appliedThe decision letter
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The main issues, what decided it, the planning balance and the policies and judgments listed as cited are read from the published letter by Town Planner Pro and are our summary, not the Inspector’s words; the letter itself is the record. Contains public sector information licensed under the Open Government Licence v3.0. Research, not advice.
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