New Green Belt statistics published by the Ministry of Housing, Communities and Local Government on 22nd October 2026 put England’s designated Green Belt at 1,632,730 hectares. That is 12.5% of England’s land area, measured at 31 March 2026.
The annual reduction was just 480 hectares, or 0.03% of the previously designated area. Seven local authorities adopted plans that altered boundaries during 2025-26, with the largest reported reduction in Tunbridge Wells, Kent.
For landowners, developers and local planning authorities, the release is a useful reality check. I would treat it as a record of changes to designated boundaries, not as a measure of land suitable for housing, planning permissions granted or land described as grey belt.
What the Green Belt statistics actually measure
The official Green Belt statistical release is based on authority boundary information, with area figures generally rounded to the nearest ten hectares. It is a snapshot at 31 March, not a continuously updated register of planning applications or policy decisions made since that date.
The revised figure for March 2025 is 1,633,210 hectares. That replaces an earlier published figure of 1,633,220 following minor corrections to spatial data. Comparing the revised baseline with March 2026 gives the reported 480-hectare fall. Treating the earlier uncorrected figure as the baseline would give the wrong annual comparison.
There is a significant distinction between a change to a mapped Green Belt boundary through an adopted plan and development allowed within an existing boundary. The latter does not, by itself, remove a hectare from the national Green Belt total. Our guide to Green Belt, grey belt, greenfield and brownfield explains why those labels should not be mixed together.
Which councils changed Green Belt boundaries?
The Green Belt statistics identify Tunbridge Wells as the largest reported net reduction, at 220 hectares, or about 3% of the borough’s previous designated area. Its local plan was adopted in December 2025 and amended boundaries at twelve sites to accommodate development allocations.
Cannock Chase and Wychavon each recorded reductions rounded to 110 hectares. Cannock Chase adopted its plan in March 2026, revising boundaries for growth needs including homes, employment and infrastructure. Wychavon’s reduction followed the adopted South Worcestershire Development Plan Review, which addressed established developed areas as well as strategic boundaries.
Spelthorne recorded a rounded reduction of 30 hectares following its March 2026 local plan adoption. Amber Valley, East Hertfordshire and Uttlesford also reported amendments, but their net changes round to zero at the ten-hectare precision used in the national table. A zero in that column should not be mistaken for proof that no individual boundary moved.
The totals in the individual council table need not add exactly to 480 hectares because of rounding. This is not evidence of missing authorities or an additional, unexplained release of land. The government’s Annex A records the planning documents behind the amendments, which should be checked for any particular site.
Grey belt cannot be read from this release
The Green Belt statistics do not tell you how many hectares have been identified as grey belt, a policy description used when assessing certain development proposals within Green Belt. The department explicitly states: “This release does not provide estimates on the amount of Green Belt land that has been identified as grey belt.”
That limitation matters now because England’s August 2026 National Planning Policy Framework retained Green Belt protections and grey belt policies, while also supporting suitable development around well-connected stations. An application may engage those national policies even where the council has made no Green Belt boundary alteration at all.
I would resist using this statistical release to claim that national grey belt reform has already released vast areas of land for building. Nor does a small annual reduction establish that viable development opportunities are scarce everywhere. Policy tests, local designations, accessibility, evidence and the stage of the plan all matter.
The regional picture looks very different
The Green Belt statistics show the South East contains the largest designated Green Belt area, at 303,990 hectares. The West Midlands has 264,280 hectares and Yorkshire and the Humber 260,470. London has only 34,780 hectares within its administrative regional boundary, but 22.1% of the region is Green Belt, the highest percentage of any region.
The South West has the smallest percentage, at 4.5% of its regional land area, despite 107,950 hectares being designated. Comparing councils or regions simply by hectares without considering their overall geography is therefore misleading.
Looking back further, the official series reports 4,480 more hectares of designated Green Belt in March 2026 than in March 2016. There have been additions as well as releases over that period. The short-term fall is not evidence of an uninterrupted decade of shrinkage.
What should a developer or landowner check?
For a specific site, start with the council’s adopted development plan and policies map, not the national aggregate. The Planning Geek local plan guide explains the stages of preparation, examination and adoption. A draft proposal to change a boundary is not the same as an adopted boundary change.
Check the date of the map, whether an adopted neighbourhood plan has made a relevant amendment, and how the local authority’s most recent evidence deals with that location. If the land remains Green Belt, the planning application must be assessed under the applicable policies rather than an assumption that a national statistical fall creates a general entitlement to build.
Where an emerging plan proposes release, evidence about exceptional circumstances, reasonable alternatives, sustainable locations and the strategic function of the Green Belt may be important. For an application under current policy, the guide to the National Planning Policy Framework provides the wider policy context. These are different questions and they belong in different assessments.
There is also a timing point. The 2025-26 Green Belt statistics describe boundaries at 31 March 2026, even though the report was published on 22 October. Plans adopted or permissions granted after the snapshot date cannot sensibly be counted as part of this particular annual change.
What happens next?
For now, the Green Belt statistics show a national reduction of 480 hectares against a designated total of more than 1.6 million hectares. That is a real recorded change, but a modest one measured against the whole designation. It says little by itself about the merits of any individual development site.
The next official statistical release is scheduled for October 2027. In the meantime, owners and advisers considering a particular parcel of land should use up-to-date local plan maps, relevant evidence and the current policy tests rather than assuming the national headline settles a local planning question.
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