Windsor House 40 - 41 Great Castle Street London W1W 8LU Data via plota.co.uk
Proposal
Installation of new plant on flat roofs at rear first, third and fourth floor levels. Data via plota.co.uk
Application progress
Approved on 30 Oct 2025 · Delegated Decision · Last checked 18 Oct 2026
Documents 27
Decision & officer reports 2
Statements & assessments 2
Plans & drawings 11
Application forms 1
Consultation & comments 1
Other documents 10
Site constraints 11
Show all 20 with distances
- 39 mPeter RobinsonGrade II
- 75 m164-182, Oxford Street W1Grade II
- 75 mNo. 219 Oxford StreetGrade II
- 89 mWalmar HouseGrade II
- 91 mOxford Circus Underground Station at the north-east corner of Argyll Street and Oxford Street, including offices aboveGrade II
- 107 m21, Little Portland Street W1Grade II
- 107 mOxford Circus Underground Station entrance on north-west corner of Argyll Street and Oxford StreetGrade II
- 113 mAudley HouseGrade II
- 117 m250-270, REGENT STREET W1 (See details for further address information)Grade II
- 118 mThe Argyll Public HouseGrade II*
- 121 mVentilation Standard on Island North of Oxford CircusGrade II
- 123 m302-312, REGENT STREET W1 (See details for further address information)Grade II
- 131 mThe London Palladium TheatreGrade II*
- 133 m156-162, Oxford Street W1Grade II*
- 134 m261-271, REGENT STREET W1 (See details for further address information)Grade II
- 135 m273, 275, 275A AND 281A, REGENT STREET W1 (See details for further address information)Grade II
- 138 mThe Welsh Baptist ChapelGrade II
- 148 mPair of K6 Telephone Kiosks in Argyll Street, LondonGrade II
- 149 mThe Pantheon (Marks and Spencers)Grade II
- 150 mAll Saints Church and Numbers 7 and 8: All Saints Church House and Vestry, Including Railings to Basement Area and Attached Pair of Lamp StandardsGrade I
Checked on 2 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1W 8LU
- Received
- 11 Sept 2025
- Validated
- 11 Sept 2025
- Ward
- West End
- Case officer
- Show
- Target decision
- 6 Nov 2025
- Decision
- Application Permitted
- Decision date
- 30 Oct 2025
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Maddox and Associates Ltd
- Freehold owner
- Show
How this decision compares
Decided in 49 days from validation, 27 days faster than Westminster's median of 76 for full applications. Approved, as 86% of full applications here are.
Plota live figures for full applications decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
24 neighbours consulted · Last counted 18 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14231896
- Planning Portal ref
- PP-14231896
- Comments by
- 29 Oct 2025
- Site or press notice
- 30 Sept 2025
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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Windsor House 40 - 41 Great Castle Street London W1W 8LU
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Freehold owner, on paid plans
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