Planning application
The Westbury Hotel 37 Conduit Street London W1S 2YF
Works: Extension
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Amendments to planning permission dated 29 November 2024 (RN: 24/06866/FULL) for Erection of a ninth floor extension with terraces accessible from the new accommodation. Erection of a fire escape stair/hatch and installation of railing to fire escape route at ninth floor level. Installation of photovoltaics to ninth floor and to the roof of additional accommodation. All in connection with the enlargement and retrofit of the existing hotel (Class C1). NAMELY, to alter the approved balustrade around the roof terrace from metal to glass, alter access point to terrace
As published by the council, reference 26/00721/NMA
Application record
- Reference
- 26/00721/NMA
- Type
- Non-material amendments
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 6 Feb 2026
- Validated
- 6 Feb 2026
- Decided
- 12 Mar 2026
- Ward
- West End
- Decision by
- Delegated Decision
- Postcode
- W1S 2YF
Site history
Applications at this address on the Westminster register
This site has had 17 applications since 2022: 7 approved, 2 refused.
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26/06518/ADFULL Awaiting decision
The Westbury Hotel 37 Conduit Street London W1S 2YF
Details of new windows, metal and stone framework for the Conduit Street facade pursuant to condition 15 of planning permission dated 15 November 2024 (RN: 24/02402/FULL).
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26/05770/ADFULL Decided
The Westbury Hotel 37 Conduit Street London W1S 2YF
Details of a supplementary acoustic report pursuant to condition 7 of Planning Permission dated 25th February 2025 (RN:24/08569).
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26/05771/ADFULL Decided
The Westbury Hotel 37 Conduit Street London W1S 2YF
Details of a supplementary acoustic report pursuant to condition 7 of planning permission dated 24th June 2026 (RN:26/01630/FULL).
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26/02089/ADFULL Awaiting decision
The Westbury Hotel 37 Conduit Street London W1S 2YF
Detailed drawings showing the following alteration to the scheme: a planting scheme within the new terrace at ninth floor level pursuant to condition 10 of planning permission dated 29th November 2024 (RN: 24/06866/FULL).
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26/02090/ADFULL Awaiting decision
The Westbury Hotel 37 Conduit Street London W1S 2YF
Details of windows and the metal and stone framework pursuant to Condition 15 of planning permission dated 15/11/2024 (RN: 24/02402/FULL)
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26/01630/FULL Awaiting decision
The Westbury Hotel 37 Conduit Street London W1S 2YF
Variation of Condition 18 of planning permission dated 15th November 2024 (RN 24/02402/FULL) for: Excavation of extension to provide a second basement level, demolition and re-build of the 6th and 7th floors and extension to form new 8th floor, erection of rear extension from ground to new 8th floor level, all to enlarge existing hotel (Class C1). External alterations including alterations to the appearance of the existing facades namely, to amend the wording of Condition 18 to require that prior to occupation, a contribution be made to the Historic England Records enhancement project by way of inputting new data for the Civil War Defences for the 41 identified sites surrounding Westbury Hotel as identified within the search area of the WSI Addendum dated 04/02/2026.
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26/00922/ADFULL Awaiting decision
The Westbury Hotel 37 Conduit Street London W1S 2YF
Details of Public Art pursuant to Condition 19 of planning permission dated 15/11/2024 (RN: 24/02402/FULL)
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26/00722/NMA Granted
The Westbury Hotel 37 Conduit Street London W1S 2YF
Amendments to planning permission dated 25 February 2025 (RN: 24/08569/FULL ) for External alterations including the installation of a plant tower at 1st to 4th floor level (with an external stair) within the north-eastern lightwell, installation of plant within a louvred enclosures at rear 1st floor level, installation of plant and associated louvred enclosures (with photovoltaics above) together with associated pipework and ducting, automatic opening vents and smoke extractors above at main roof level (9th floor) and to the roof of the 9th floor accommodation and installation of 3no. satellite dishes at main roof level (9th floor). NAMELY, to remove GRP enclosure on the roof of the 9th floor and replace with switchboard.
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26/00720/ADV Granted
The Westbury Hotel 37 Conduit Street London W1S 2YF
Display of 1x flag with branding over entrance canopy measuring 0.91m x 1.83, 1x internally illuminated (LED edge) fascia sign measuring 1.2m x 0.27m and two non-illuminated entrance signs measuring 0.47m x 0.7m and 0.42m x 0.42m
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26/00419/ADFULL Awaiting decision
The Westbury Hotel 37 Conduit Street London W1S 2YF
Details of Service Management Plan; Pursuant to condition 16 of planning permission dated 07 October 2024 (RN: 24/02402/FULL)
Timeline
Dates from the published record
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6 Feb 2026
Received by Westminster
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12 Mar 2026
Decision issued: Application Permitted
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21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
hgh Consulting Ltd Agent
438 applications on PlanIndex · across 43 councils · 91% granted
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See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
4 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
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Open the documentsWhat this grant of permission means
Westminster granted permission on 12 March 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About amendment applications
An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
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The Westbury Hotel 37 Conduit Street London W1S 2YF
Display of 1x flag with branding over entrance canopy measuring 0.91m x 1.83, 1x internally illuminated (LED edge) fascia sign measuring 1.2m x 0.27m and two non-illuminated entrance signs measuring 0.47m x 0.7m and 0.42m x 0.42m
Granted Advertising 11 docs -
The Westbury Hotel 37 Conduit Street London W1S 2YF
Amendments to planning permission dated 25 February 2025 (RN: 24/08569/FULL ) for External alterations including the installation of a plant tower at 1st to 4th floor level (with an external stair) within the north-eastern lightwell, installation of plant within a louvred enclosures at rear 1st floor level, installation of plant and associated louvred enclosures (with photovoltaics above) together with associated pipework and ducting, automatic opening vents and smoke extractors above at main roof level (9th floor) and to the roof of the 9th floor accommodation and installation of 3no. satellite dishes at main roof level (9th floor). NAMELY, to remove GRP enclosure on the roof of the 9th floor and replace with switchboard.
Granted Amendments 4 docs -
The Westbury Hotel 37 Conduit Street London W1S 2YF
Replacement of hotel forecourt hard surfaces, increasing the width of the footway, changes to levels and other associated development
Granted Full applications 29 docs -
The Westbury Hotel 37 Conduit Street London W1S 2YF
Re-installation of five flagpoles on canopy of hotel entrance
Granted Full applications 17 docs -
The Westbury Hotel 37 Conduit Street London W1S 2YF
Installation of a safety guard rail on the eigth floor roof level and the installation of plant within the rear lightwell at second and third floor levels.
Granted Full applications 26 docs -
The Westbury Hotel 37 Conduit Street London W1S 2YF
89% historically approved · decision due ~19 Oct
Details of a supplementary acoustic report pursuant to condition 7 of Planning Permission dated 25th February 2025 (RN:24/08569).
Decided
Other amendment applications
In Westminster
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26/07459/NMA Awaiting decision
1 Hanover Square London W1S 1HA
Amendments to planning pemrission dated 10 October 2025 (RN: 25/01558/FULL) for the: Partial demolition, refurbishment and extension of the existing building to provide a sub-basement, basement, ground plus eight storey building; infilling and stepped rear extension; excavation of a new sub-basement level; installation of new plant equipment at basement and roof level; terraces at fourth, fifth, sixth, seventh and eighth floor levels; soft and hard landscaping; reprovision of car parking; new cycle parking facilities; and associated external works. Use of the building for retail and/or restaurant (Class E) on part ground floor and office (Class E) on all other floors. NAMELY, to allow alterations to the design of the ground floor frontages on Hanover Square and St George Street.
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26/07438/NMA Awaiting decision
29 - 31 Hill Street London W1J 5LS
Amendments to planning permission dated 1st July 2025 (RN 25/01006/FULL) for the external alterations at roof level including the creation of Level 04 roof terrace for use in association with existing office (Class E), replacement and installation of new plant and landscaping, replacement of windows, introduction of louvres, removal and replacement of rooflights, installation of new rooflight and other associated works. NAMELY, for alterations comprising of the removal of window sash boxes and weights, changes to the window mullion arrangement, the removal of two sash windows, the installation of secondary glazing, the removal of existing chamber hatch and installation of extract vent and integrated bench, the external replacement of rainwater goods and hoppers, the removal of bricks and installation of airbricks, minor demolition works, replacement of roof covering, removal of ductwork, roof plant rearrangement, the installation of a new external door to plant area, minor layout alterations and other associated works.
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26/07389/NMA Decided
Flat 1 5 Grittleton Road London W9 2DD
Amendments to planning permission dated 04 June 2025 (RN: 25/02022/FULL), NAMELY, amendment of Condition 4 to correct the property address from 9 Aldridge Road Villas to Flat 1 5 Grittleton Road.
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26/07377/NMA Awaiting decision
60 Ledbury Road London W11 2AJ
Amendments to planning permission dated 2nd October 2025 (RN 25/04018/FULL) for the Partial demolition, refurbishment, and erection of a mansard roof extension to form a new third floor with dormers to front, side and rear elevations; to form 6 flats (Class C3) on upper floors; external plant equipment and ductwork; lower ground floor excavation to increase floor to ceiling height; replacement windows; cycle parking and associated external alterations; use of the part ground floor and lower ground floor as retail and restaurant (Class E). Site includes 60-68 Ledbury Road) NAMELY, An amendment to the basement and ground floor drawing reference numbers; amendment to the description of development, in reference to restaurant and or retail use; and amendments to C
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26/07375/NMA Awaiting decision
77 Hereford Road London W2 5BB
Amendments to planning permission dated 4th August 2026 (RN 26/03970/FULL) for the Replacement of roof terrace access stair with glazed hatch, new timber decking and front and rear roof railings to roof terrace, with infilling side window of closet wing. NAMELY, Hinged hatch access substituted by sliding hatch.