Admiralty Arch The Mall London SW1A 2WH

25/07589/NMANon-material amendmentsApproved

Discharge / amendments

Approved on 19 November 2025

Site boundary (council red line)

Proposal

Amendments to planning permission dated 6th January 2025 (RN:24/03757/FULL) for Variation of Condition 1 of planning permission (RN:23/07789/FULL) for the: Use of Admiralty Arch as a 100 bedroom hotel, private members club and one, two or four self contained residential units. Internal and external alterations including creation of two new basement levels for ancillary hotel facilities and plant outside of the footprint of the listed building located within the under pavement vaults, accessed via subterranean links underneath the building, changes to rooflights, alterations to lift overruns, installation of risers in the lightwell, introduction of additional roof top plant and non-roof top plant, alterations to roof terrace layouts and to perimeter screens and changes to internal layout of residential units and private members club. Namely, to allow alterations to L06 Rooflight & Chimney, Lift 22 extension to L06 and L07 access requirements.

Received: 21 October 2025
Council: City of Westminster
Ward: St James's
Agent: DP9 Ltd

ReceivedReceived21 Oct
ValidatedValidated21 Oct
Consult.Consultation
TargetTarget Date18 Nov
DecidedDecided19 Nov

Decided in 29 days (council typically 49)

About this application

This is an application to amend a permission at Admiralty Arch The Mall London SW1A 2WH. Westminster has handled 604 applications of this type. This one was decided in 29 days, 3 weeks quicker than Westminster's typical decision time. The site is in the Trafalgar Square conservation area, with 9 listed buildings nearby. There have been 21 other applications at this address. In the past year there have been 478 applications across St James's. We hold 1,263 applications in total for the SW1A postcode area.

88% of amendment applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode: SW1A 2WH
Application type: Non-material amendments
Scale / size: Small

Planning application dates

Date validated: 21 October 2025
Target decision date: 18 November 2025

Applicant and agent

Agent: DP9 Ltd
Agent address: 100 Pall Mall London SW1Y 5NQ United Kingdom

Planning decision

Statutory period: 28 days

Additional information

Planning Portal ID: PP-14419265
Comments: 0
Documents: 20

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Flood zone 3: High probability (rivers and sea)Part of the site
Conservation area: Trafalgar SquarePart of the site · +2 more
Listed building: Grade I: Admiralty Arch, First Sea Lord'S Residence and Offices, Balustrades and StepsOn this site · +3 more
Article 4 direction: Article 4 Basement Development Permitted Rights Removed
Registered park and garden: St James'S ParkPart of the site
Brownfield land register: Admiralty Arch The Mall London SW1A 2DYRegister site at or near this address · +1 more

Also checked, none recorded (19)

flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves and heritage coasts.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Associated applications

Planning history at this site

20 other applications at this property, newest first.

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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