Planning application
25/09214/FULL
79 Harley Street London W1G 9HW
Proposal
Variation of conditions 1 and 5 of planning permission dated 31 August 2023 (RN: 23/04631/FULL) for the: External and internal alterations at lower ground, ground and first floor rear flat roof level associated with the installation of a new MR Linac machine at lower ground floor level. Installation of new plant and relocation of existing plant, including a quench pipe within the external area at rear ground floor level and on the first floor flat roof area, the removal of skylight and associated works. NAMELY, to allow internal and external amendments and the installation of additional plant.
As published by the council, reference 25/09214/FULL
Timeline
Dates from the published record
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19 Dec 2025
Received by Westminster
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20 Apr 2026
Decision issued: Application Permitted
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20 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
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25/09253/LBC Granted
79 Harley Street London W1G 9HW
Internal alterations at basement and ground floor levels and external alterations including the removal of roof lanterns; installation of new plant within the lightwell at ground floor level and on the flat roof area at first floor level.
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26/00611/ADFULL Awaiting decision
2 Wimpole Mews London W1G 8PE
Detailed drawings (1:20 and1:5) inc existing fabric junction pursuant to Condition 4 of planning permission dated 31 July 2025 (RN: 25/03972/FULL)
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26/00270/LBC Granted
73 - 75 Harley Street London W1G 8QJ
Refurbishment of two consulting rooms by introducing floor to ceiling oak wall panelling, new storage unit, coffered ceilings in lime plaster, downlights and replacement of existing carpet. New storage units in treatment rooms.
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24/03878/FULL Awaiting decision
12 Wimpole Mews London W1G 8PF
Replacement garage door, in addition to new internal partitions within one of the garages to provide a fire evacuation route for the new MR Linac facility at 79-81 Harley Street. (Linked to 24/03879/LBC)
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24/03879/LBC Awaiting decision
12 Wimpole Mews London W1G 8PF
Replacement garage door, in addition to new internal partitions within one of the garages to provide a fire evacuation route for the new MR Linac facility at 79-81 Harley Street. (Linked wth 24/03878/FULL)The new garage door has been designed to match the appearance of the existing roller garage door but will be side hinged and open outwards into the mews in accordance with fire regulations. The doors will only be opened for emergency evacuation purposes ??? there are existing single yellow lines along the mews which ensure safe egress. The existing (and proposed) doors are currently blue and will be painted in light grey to match and better harmonize with the rest of the mews. The proposal is considered far more appropriate than the previously consented scheme from 2005 (reference 05/02253/FULL and 05/02254/LBC). The proposal also includes for small new internal partitions (and lining) within the garage building to provide for a fire resistant route from existing services such as a gas meter and associated pipework as required by fire regulations ??? as seen on the submitted floor plan. The mews building itself is within the curtilage of 79-81 Harley Street but has no historic fabric or merit itself ??? this notwithstanding, no demolition is proposed, other than the replacement of one garage roller door.
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09/10469/CAC Withdrawn
9 Wimpole Mews London W1G 8PB
Demolition of part of existing roof.
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26/04986/FULL Awaiting decision
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