21 Arlington Street SW1A 1RN Data via plota.co.uk
Proposal
T1 1 x purple beech: crown reduce all round by 0.5-1m to shape and tidy, not exceeding any previous reduction points. Reduce overlong, extended branches only by up to 1.5m (not exceeding previous reduction points) to bring into the main canopy line. T2 1 x Japanese maple: crown reduce by up to 1m and prune back any overextended lateral branches into main canopy line, maintaining crown shape. T3 1 x walnut: reduce height by up to 1.5m and shape the lateral branches to create a more compact crown and aesthetically pleasing overall outline T4 1 x cherry: crown reduce by up to 1m to create a neater and more compact crown. Data via plota.co.uk
Application progress
Approved on 9 Oct 2025 · Delegated Decision · Last checked 18 Oct 2026
Documents 7
Decision & officer reports 1
Statements & assessments 1
Plans & drawings 1
Application forms 2
Site constraints 13
Show the other 39 with distances
- 6 mWimbourne HouseGrade II*
- 30 mThe Ritz HotelGrade II*
- 38 mForecourt Railings and Gate Piers to Number 21Grade II*
- 56 mThe Royal Overseas League, Including Rutland House and Its Former Gatehouse, Number 16 Arlington Street, and Vernon House to the SouthGrade I
- 58 mPart of the Devonshire ClubGrade II*
- 61 mPair of K6 Telephone Kiosks Adjacent to Western Corner of Ritz HotelGrade II
- 62 mPart of the Devonshire ClubGrade II
- 67 mThe Wolseley 157-160 Piccadilly including 1-3 Arlington StreetGrade II*
- 67 m19 Lampstandards Ranged Along Queen's Walk From Outside Wimbourne House to Junction With the MallGrade II
- 77 m5 Large Lampstandards East and West of Avenue From Piccadilly to Victoria MemorialGrade II
- 79 mDevonshire ClubGrade II
- 80 mBrook's Club (South of Number 60)Grade I
- 81 m20, St James's Place Sw1Grade II
- 81 m19, St James's Place Sw1Grade II
- 84 mDevonshire HouseGrade II
- 92 m49, ST JAMES'S STREET SW1 (See details for further address information)Grade II*
- 98 mListed buildings 1429315
- 102 m7 Lampstandards Numbered 2, 4, 5, 7, 8, 11 and 13Grade II
- 112 mPratt's ClubGrade II
- 117 m63 and 65, Piccadilly W1Grade II
- 121 mStratton HouseGrade II
- 121 m20, BLUE BALL YARD SW1 (See details for further address information)Grade II
- 125 mWhite's ClubGrade I
- 127 m15, St James's PlaceGrade II
- 127 m14, St James's Place Sw1Grade II
- 127 m13, St James's Place Sw1Grade II
- 127 mBoodle's ClubGrade I
- 127 m11, St James's Place Sw1Grade II
- 131 m50, Albemarle Street W1Grade II*
- 131 m162-165, PICCADILLY W1 (See details for further address information)Grade II
- 134 mThe Economist group (including office tower, residential block, former bank and podium)Grade II*
- 136 m10, St James's Place Sw1Grade II
- 137 m5-9 St James's PlaceGrade II
- 138 m49, Albemarle Street W1Grade II
- 142 m26, St James's PlaceGrade II*
- 143 m61, 61A, 62 AND 62A, PICCADILLY W1 (See details for further address information)Grade II
- 145 m4, St James's Place Sw1Grade II*
- 147 m2 and 3, St James's PlaceGrade II
- 148 m3 Bollards, One by Number 13, One by Number 15, One by Number 31Grade II
Checked on 2 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Building
From the energy performance certificate lodged in July 2025, the latest held for this property. The building may have changed since. View the certificate
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Westminster
- Application type
- Applic. for works to trees in CA
- Postcode
- SW1A 1RN
- Received
- 1 Sept 2025
- Validated
- 1 Sept 2025
- Ward
- St James's
- Case officer
- Show
- Target decision
- 27 Oct 2025
- Decision
- No objections
- Decision date
- 9 Oct 2025
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Cook Arboricultural Services
- Leaseholder
- Show
How this decision compares
Decided in 38 days from validation, about the council's usual 36 days. Approved, as 99% of tree and landscaping works here are.
Plota live figures for tree and landscaping works decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
Last counted 18 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14295536
- Planning Portal ref
- PP-14295536
- Env. assessment
- No
Historical activity at this location
28 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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21 Arlington Street SW1A 1RN
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