The High Court has quashed planning permission for a 132-home scheme at 1 Burlington Lane, Chiswick after finding that Hounslow councillors were materially misled about an earlier appeal permission that formed the site’s realistic fallback.
R (The Old Chiswick Protection Society) v London Borough of Hounslow [2026] EWHC 2278 (Admin) is a particularly useful judgment for anyone preparing or relying on a planning officer report. The problem was not that officers disagreed with a Planning Inspector. They were entitled to reach a different planning judgment. The problem was that members were not accurately told what the Inspector had previously decided, why he had decided it, or that the later officer assessment was departing from those conclusions.
Two schemes at 1 Burlington Lane
The site contains a vacant five-storey office building within the Chiswick House Conservation Area and close to important listed heritage assets.
Hounslow refused an earlier application in March 2023 to extend and redevelop the building for 104 flats with retained office space. Among the reasons were concerns about housing mix, the living conditions of future residents and the quality of the design.
That refusal went to appeal. On 12th April 2024, Inspector Jonathon Parsons allowed appeal APP/F5540/W/23/3327579 and granted permission for the 104-flat scheme.
The appeal permission was then implemented and remained extant. That mattered. It was not a theoretical possibility sitting on a drawing board. It was a realistic fallback position which Hounslow itself regarded as likely to be carried out if the later application was refused.
In July 2024 a new application was made for demolition and redevelopment of the site with a part six-storey, part ten-storey building containing 132 self-contained flats, together with a terrace of three-storey homes and flexible commercial floorspace.
The planning committee resolved to grant that later scheme on 7th August 2025. The planning permission challenged in court was issued on 20th January 2026.
What the earlier Inspector had actually decided
The earlier appeal decision was important because the Inspector had directly considered the same criticisms later used to describe the fallback scheme.
On living conditions, he concluded that residents would not suffer unacceptable effects from outlook, daylight, sunlight, ventilation, noise, air pollution or the provision of external space. He considered the number of single-aspect homes acceptable in the context of the scheme.
On design, he found the proposal to be high quality for the site, an improvement on the existing townscape and an enhancement to the character and appearance of the Chiswick House Conservation Area.
The Inspector did identify conflicts over housing mix and a small shortfall in children’s play space. But in the overall planning balance he concluded that the scheme complied with the development plan when read as a whole and granted permission.
This distinction became central in the High Court. A permission being granted does not mean every feature of a scheme has been positively endorsed. Here, however, the Inspector had expressly reached positive conclusions on the very matters later described negatively to the committee.
How the fallback was described to councillors
The later officer report ran to about 109 pages and recommended approval of the 132-home scheme. It recognised the fallback and said it should carry significant weight because it had been implemented and was likely to proceed if the new proposal were refused.
But the same report described the fallback as not being good design and as providing poor-quality accommodation. The committee presentation reinforced those criticisms, referring to poor accommodation, poor visual appearance and low design quality.
The committee was told that the earlier scheme had been allowed on appeal and was given the appeal reference. It was not given the Inspector’s decision or a proper summary explaining that the Inspector had rejected Hounslow’s criticisms on design and living conditions.
HHJ Emma Kelly found that councillors were entitled to assume the officer report accurately described the fallback. The burden was not on individual members to locate the appeal decision and check whether the officer’s account was correct.
Consistency does not mean every decision must be the same
The judgment does not say that a council must copy an earlier Inspector’s planning judgment.
Previous decisions can be material considerations, particularly where a later decision necessarily agrees or disagrees with a critical aspect of an earlier one. Consistency matters because developers, councils and the public should be able to understand why apparently comparable planning judgments differ.
A later decision-maker remains free to disagree. But where the earlier decision is materially relevant, the later decision-maker needs to understand the earlier conclusion and its reasoning. If it departs from a critical finding, the disagreement needs to be identified and properly explained.
At Chiswick, the court found that Hounslow’s comparative assessment necessarily disagreed with the Inspector on two critical aspects: design quality and living conditions. The officer report did not identify that conflict accurately or explain why officers were now taking a different view.
The legal problem was the missing explanation
This is the point worth keeping.
There is an important difference between:
- disagreeing with an earlier Inspector
- failing to tell members that the later assessment disagrees with that Inspector
- failing to equip members with enough of the earlier reasoning to make a lawful planning judgment
The first can be perfectly lawful. The second and third can make the decision vulnerable where the earlier decision is a material part of the planning balance.
The High Court held that the officer report materially misled the committee. Members were given a misleading picture of the fallback scheme and were deprived of the opportunity to make an objective comparison between it and the new proposal.
Could the objector correct the officer report at committee?
Russell Harris KC, speaking for the Old Chiswick Protection Society, told the committee that the Inspector had rejected the council’s earlier case on living conditions and had found the fallback acceptable.
That did not cure the defect.
The court noted that he was speaking for an objector, not as a neutral adviser to the committee. His intervention did not address all of the disputed design findings and did not give members the Inspector’s reasoning. More importantly, neither the planning officer nor the legal adviser corrected the officer report after the point had been raised.
The court was also cautious about reconstructing a corporate committee’s reasoning from individual comments made during debate. Some members spoke, others did not, and isolated comments could not establish the collective reasoning of the committee.
The legal advice did not solve it either
A councillor asked for legal advice on whether approving the new scheme would amount to going against the Planning Inspector.
The advice given was essentially that members did not need to examine all of the detail considered on appeal and should focus on the outcome of the appeal as a material consideration, then compare the new proposal with the fallback.
The High Court found that insufficient. In this case, members needed to know the basis of the Inspector’s decision on the matters where the officer report was taking an inconsistent position. Merely knowing that an appeal had been allowed was not enough.
Why section 31(2A) did not save the permission
Hounslow and the developer argued that, even if there had been a legal error, the court should refuse relief under section 31(2A) of the Senior Courts Act 1981.
That provision can prevent relief where it is highly likely that the outcome would not have been substantially different without the legal error.
The High Court rejected the argument. The fallback had been given significant weight and considerable prominence in the heritage and public-benefit balancing exercise. The committee had therefore carried out that balance on a false premise about the quality of the fallback.
It was not enough to say members might or even may well have approved the 132-home scheme anyway. The statutory test is deliberately higher. For the court itself to decide that the planning balance would inevitably have come out the same way would have risked substituting its own assessment for the committee’s planning judgment.
The permission was therefore quashed.
What planning officers and committees should take from Chiswick
The judgment is not an instruction to reproduce every earlier appeal decision in full. Officer reports are read fairly and sensibly, not as legal judgments.
But where a previous appeal is being given significant weight, particularly as a realistic fallback, the report should identify the earlier decision accurately enough for members to understand any critical conclusions relevant to the comparison.
If officers now disagree with an Inspector on one of those critical matters, say so. Explain the difference and why the later planning judgment is different. Do not leave members to infer the earlier reasoning from the bare fact that permission was granted.
For applicants and objectors, the practical lesson is similar. If a previous appeal decision is materially relevant, do not just cite the appeal number. Identify the specific finding that matters, explain why it bears on the current decision and make sure the decision-maker has the reasoning needed to deal with it.
For committee members, an obvious tension between an officer’s description of a previous scheme and a recent Inspector’s decision is a reason to ask for the earlier reasoning before voting.
Primary sources
Read the locally hosted Planning Geek copy of the complete High Court judgment.
View the official judgment on The National Archives.
Read Hounslow’s committee officer report.
The earlier appeal was APP/F5540/W/23/3327579, decided on 12th April 2024. Planning Geek reviewed the complete Inspector’s decision when preparing this article.
Published: 15th September 2026
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