Flat 3f Oxford And Cambridge Mansions Old Marylebone Road London NW1 5ED

1. 11 Jul 2023

   Received by Westminster

2. 17 Aug 2023

   Decision issued: Application Permitted

3. 14 Sep 2026

   Added to PlanIndex

Westminster granted permission on 17 August 2023, 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.

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.

• 48 Chapel Street London NW1 5DH

  26/01942/CLEUD Submitted 25 Mar 2026 50 yards away

  84% historically approved · decision due ~20 May

  To confirm the lawful implementation of planning permission dated 7 October 2022 under application referenced 20/06148/FULL for "Demolition of the existing building and erection of a part 3 storey and part 7 storey (plus basement) hotel, public house and retail premise; including excavation of basement, bin and bike storage, rooftop plant, new tree and relocation of two phone boxes (linked to 20/06108/LBC)."

  Awaiting decision Lawful development Demolition Trees 14 docs

• 245 Old Marylebone Road London NW1 5QT

  25/08853/LBC Submitted 5 Dec 2025 50 yards away

  90% historically approved · decision due ~3 Apr

  External alterations including erection of cycle storage in car park; alterations to windows and replacement of external doors (these previously approved under application 23/06852/FULL); enhancements and changes to front and side of existing building including additional works to windows, new external HVAC system. installation of eight A/C condenser units along the flank wall above basement level. Internal alterations (Linked to 25/06183/FULL)

  Decided Heritage and listed buildings Windows or glazing 43 docs

• 245 Old Marylebone Road London NW1 5QT

  25/06183/FULL Submitted 1 Sep 2025 50 yards away

  88% historically approved · decision due ~3 Apr

  External alterations including erection of cycle storage in car park; alterations to windows and replacement of external doors (these previously approved under application 23/06852/FULL); enhancements and changes to front and side of existing building including additional works to windows, new external HVAC system. installation of three A/C condenser units along the flank wall above basement level. Internal alterations (Linked to 25/08853/LBC)

  Decided Full applications Windows or glazing 72 docs

• 245 Old Marylebone Road London NW1 5QT

  26/01180/ADLBC Submitted 25 Feb 2026 50 yards away

  89% historically approved · decision due ~25 May

  Detailed drawings of secondary glazing and new external and internal doors pursuant to condition 4 of listed building consent dated 23rd April 2025 (RN: 24/01518/LBC). Linked to 25/08166/ADFULL.

  Awaiting decision Conditions Windows or glazing 13 docs

• 233 - 237 Old Marylebone Road London NW1 5QT

  26/00631/FULL Submitted 3 Feb 2026 50 yards away

  88% historically approved · decision due ~19 May

  Erection of a ground floor extension to the front of the building.

  Awaiting decision Full applications Extension 22 docs

• 3 Homer Street London W1H 4NP

  23/03904/ADFULL Submitted 12 Jun 2023 100 yards away

  Detailed drawings, including elevations and sections (1:10 or 1:5), of the proposed new windows showing traditional joinery details and integral glazing bar and details of secure cycle storage for two cycle storage spaces pursuant to Conditions 4 and 5 of planning permission dated 18 November 2022 (RN:22/07847/FULL)

  Granted Full applications Windows or glazing 11 docs

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications