

In R (The Old Chiswick Protection Society) v London Borough of Hounslow [2026] EWHC 2278 (Admin), the High Court has quashed a planning permission for a new high-rise development in the Chiswick House Conservation Area. My colleague Craig Shearer has set out the details of the facts and judgment below.
Background and facts
By a decision notice dated 31 March 2023, the London Borough of Hounslow (“the Defendant”) refused an application to extend and redevelop a site to accommodate 104 residential flats with retained office space. The grounds for refusal included an unsuitable housing mix, unacceptable living conditions and a design standard that would harm the area's appearance. Planning permission was granted on appeal, subject to conditions (“the Fallback Scheme”). The Inspector concluded that the development would be of high quality and design and would enhance the character and appearance of the area.