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Planning application

10 Downing Street London SW1A 2AA

Granted Westminster 25/09398/FULL Full Planning Permission Application

Relates to 25/08032/LBC

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Application for External Works to Steps. (Linked app: 25/08032/LBC)

As published by the council, reference 25/09398/FULL

Application record

Reference
25/09398/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
24 Nov 2025
Validated
24 Nov 2025
Decided
31 Mar 2026
Ward
St James's
Decision by
Delegated Decision
Postcode
SW1A 2AA

Site history

Applications at this address on the Westminster register

This site has had 16 applications since 2005: 15 approved, 0 refused.

  • 26/01372/LBC Awaiting decision

    10 Downing Street London SW1A 2AA

    Removal and replacement of internal doors, typically existing frames and architraves to remain in place. Addition of two new doors at 3rd floor level. Removal of modern timber framed partition and door, replaced with new construction at similar location at 3rd floor. Replacement of a modern security shutter with a fire curtain.

    Submitted 25 Feb 2026 Heritage and listed buildings
  • 25/08032/LBC Granted

    10 Downing Street London SW1A 2AA

    Application for External Works to Steps. (Linked app: 25/09398/FULL)

    Decided 31 Mar 2026 Heritage and listed buildings
  • 25/05863/LBC Granted

    10 Downing Street London SW1A 2AA

    Installation of metal angle to internal stone staircase to prevent further movement.

    Decided 9 Oct 2025 Heritage and listed buildings
  • 12/04103/LBC Granted

    10 Downing Street London SW1A 2AA

    Erection of new railings and handrail to existing flight of steps leading from Mountbatten Green to Downing Street.

    Decided 2 Jul 2012 Heritage and listed buildings
  • 12/04102/FULL Granted

    10 Downing Street London SW1A 2AA

    Erection of new railings and handrail to existing flight of steps leading from Mountbatten Green to Downing Street.

    Decided 2 Jul 2012 Full applications
  • 11/03500/LBC Granted

    10 Downing Street London SW1A 2AA

    Internal alterations involving forming a new aperture in an existing dividing wall.

    Decided 14 Jun 2011 Heritage and listed buildings
  • 11/03473/LBC Granted

    10 Downing Street London SW1A 2AA

    Replacement of existing external lighting.

    Decided 14 Jun 2011 Heritage and listed buildings
  • 09/08135/LBC Granted

    10 Downing Street London SW1A 2AA

    Brickwork conservation to the Kent block and relaying of paving to the Kent Block Terrace: Repair and conservation of the red coloured brickwork of the North or Kent Block and the black coloured brickwork of west face of the link corridor to the front block with associated repairs to the clay tile roofing and timber cornice below the gutter: Lifting of paving to the terrace to the west of the Kent block, excavation of loose fill, placement of lime concrete fill with hydraulic lime based tanking water resisting layer and reinstatement of the stone paving.

    Decided 2 Dec 2009 Heritage and listed buildings
  • 09/00619/LBC Granted

    10 Downing Street London SW1A 2AA

    Refurbishment of existing WC's.

    Decided 1 Apr 2009 Heritage and listed buildings
  • 08/03454/LBC Granted

    10 Downing Street London SW1A 2AA

    Installation of CCTV.

    Decided 1 Sep 2008 Heritage and listed buildings

Timeline

Dates from the published record

  1. 24 Nov 2025

    Received by Westminster

  2. 31 Mar 2026

    Decision issued: Application Permitted

  3. 1 Aug 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 25/08032/LBC Granted

    10 Downing Street London SW1A 2AA

    Application for External Works to Steps. (Linked app: 25/09398/FULL)

    Decided 31 Mar 2026 Heritage and listed buildings

1 later application on the register refers to this one:

  • 25/08032/LBC Granted

    10 Downing Street London SW1A 2AA

    Application for External Works to Steps. (Linked app: 25/09398/FULL)

    Decided 31 Mar 2026 Heritage and listed buildings

Who's behind it

Company information only, from the register and Companies House

Feilden and Mawson LLP Agent

31 applications on PlanIndex · across 7 councils · 100% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

5 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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What this grant of permission means

Westminster granted permission on 31 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 full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 10 Downing Street London SW1A 2AA

    25/08032/LBC Submitted 24 Oct 2025 50 yards away

    Application for External Works to Steps. (Linked app: 25/09398/FULL)

    Granted Heritage and listed buildings 5 docs

  • 10 Downing Street London SW1A 2AA

    25/05863/LBC Submitted 19 Aug 2025 50 yards away

    Installation of metal angle to internal stone staircase to prevent further movement.

    Granted Heritage and listed buildings 6 docs

  • 10 Downing Street London SW1A 2AA

    11/03500/LBC Submitted 8 Apr 2011 50 yards away

    Internal alterations involving forming a new aperture in an existing dividing wall.

    Granted Heritage and listed buildings

  • 10 Downing Street London SW1A 2AA

    11/03473/LBC Submitted 8 Apr 2011 50 yards away

    Replacement of existing external lighting.

    Granted Heritage and listed buildings

  • 11 Downing Street London SW1A 2AA

    10/06521/LBC Submitted 28 Jul 2010 50 yards away

    Internal alterations comprising new partition wall and relocation of door leaf.

    Granted Heritage and listed buildings

  • 10 Downing Street London SW1A 2AA

    08/03454/LBC Submitted 17 Apr 2008 50 yards away

    Installation of CCTV.

    Granted Heritage and listed buildings

In Westminster

  • 26/06234/FULL Decided

    40 Grosvenor Place London SW1X 7HJ

    Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

    Received 11 Sep, published by the council 18 Sep 2026 Full applications
  • 26/07403/FULL Awaiting decision

    Basement Floor And Ground Floor Queen Annes House 34 Queen Anne's Gate London SW1H 9AB

    Refurbishment and enhancement of the building to facilitate its continued use as offices with ancillary residential accommodation, together with associated conservation, restoration, accessibility improvements, building services upgrades, landscaping and ancillary works. Internal and external alterations associated with the repair. (Linked with 26/07404/LBC)

    Received 30 Oct, published by the council 3 Nov 2026 Full applications
  • 26/07415/FULL Awaiting decision

    39 Montagu Square London W1H 2LL

    Amalgamation of Flats 3 and 4 (Use Class C3) to form one single dwelling (Use Class C3) including associated internal reconfiguration and refurbishments, alterations to access arrangements and improvements to the existing terrace and private amenity spaces, new plant and other associated works. (Linked with 26/07416/LBC)

    Received 30 Oct, published by the council 3 Nov 2026 Full applications
  • 26/07397/FULL Awaiting decision

    8 Mortimer Street London W1T 3JJ

    External alterations at level six including the installation of a screen, additional access doors and revised lighting. 2 Fitzroy Place (8 Mortimer Street)

    Received 29 Oct, published by the council 3 Nov 2026 Full applications
  • 26/07401/FULL Awaiting decision

    82 Jermyn Street London SW1Y 6JD

    Use of the ground floor unit as a drinking establishment (Sui Generis).

    Received 29 Oct, published by the council 3 Nov 2026 Full applications