Parliamentary Estate Parliament Street London SW1A 2NU Data via plota.co.uk
26/05113/NMA - Non-material amendments
Approved
Proposal
Amendments to planning permission dated 17 July 2026 (RN: 26/03093/FULL) for excavation of trial trenches within and adjacent to the Northern Parliamentary Estate. (Linked with 26/03094/LBC); NAMELY, to reposition and alter six trial trenches. Data via plota.co.uk
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View original council record ↗Last checked
Application progress
✓
Received
29 Jul 2026
✓
Approved
5 Aug 2026
Approved on 5 Aug 2026 · Delegated Decision · Last checked 5 Aug 2026
Documents 3
Decision & officer reports 1
Other documents 2
Associated applications 3
Part of
Excavation of trial trenches within and adjacent to the Northern Parliamentary Estate. (Linked with)- AmendmentAmendments to planning permission dated 17 July 2026 (RN)This application26/05113/NMA
Site constraints 13
Grade II listed: 38 and 39, Parliament Street Sw1
List entry 1265866 · The pin is inside its outline · 37 more listed buildings within 150 m (5 Grade I, 8 Grade II*, 21 Grade II)
Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show the other 37 with distances
- 7 m41 and 42, Parliament Street Sw1Grade II
- 7 m37, Parliament Street Sw1Grade II
- 12 m34-36, PARLIAMENT STREET SW1 (See details for further address information)Grade II
- 16 mSt Stephen's TavernGrade II
- 18 m43, Parliament Street Sw1Grade II*
- 26 m44, Parliament Street Sw1Grade II*
- 34 m45 and 46, Parliament Street Sw1Grade II
- 37 mCannon Row Police StationGrade II*
- 42 mListed buildings 1219303
- 49 m47, Parliament Street Sw1Grade II*
- 51 mNew Government Offices (HM Treasury) and archway link with Foreign Office at east end of King Charles StreetGrade II*
- 68 m4 Lamp Standards Numbered 1 to 4Grade II
- 70 m14 Lampstandards Flanking Carriage Drive in New Palace Yard, Houses of ParliamentGrade II
- 74 mRed Lion Public HouseGrade II
- 75 mGates and Piers to Entrance to Derby GateGrade II
- 75 mStatue of Sir Winston ChurchillGrade II
- 79 m49 and 50, Parliament Street Sw1Grade II
- 79 mRichmond House, incorporating Nos. 1-8 Richmond TerraceGrade II*
- 79 mFormer New Scotland Yard, Norman Shaw South BuildingGrade II*
- 85 mListed buildings 1066399
- 86 mWestminster Bridge, Westminster Bridge Road
- 90 m53, Parliament Street Sw1Grade II
- 90 mGates, Railings, Gate Piers to New Palace Yard, Houses of ParliamentGrade I
- 95 mFormer New Scotland Yard, Norman Shaw North BuildingGrade I
- 95 mHouses of Parliament and The Palace of WestminsterGrade I
- 97 mStatue of Field Marshal Jan SmutsGrade II
- 104 m54 Parliament Street (former Grindlay's Bank)Grade II
- 104 mForeign and Commonwealth Office With Home Office the Foreign Office the Foreign Office (Foreign and Commonwealth Office With Home Office)Grade I
- 106 mStatue of Henry John Temple, Viscount PalmerstonGrade II
- 119 m85 WhitehallGrade II
- 121 mStatue of Edward Stanley, Earl of DerbyGrade II
- 123 mGates and Piers Between Norman Shaw North and South Buildings, Former New Scotland YardGrade II*
- 134 mStatue of Benjamin Disraeli, Earl of BeaconsfieldGrade II
- 141 mThe CenotaphGrade I
- 142 mStatue of George CanningGrade II
- 144 mBoadicea (Boudicca) Statuary GroupGrade II
- 148 mStatue of Sir Robert PeelGrade II
Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Whitehall conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Article 4 direction
Article 4 Basement Development Permitted Rights Removed. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Protected view corridor: 2A.2 Parliament Hill summit to the Palace of Westminster
Inside the landmark viewing corridor of a protected vista. A building that rises above the corridor's threshold height should be refused. How high that is depends on where along the view the site is. Also in the corridor of 2B.1 Parliament Hill oak tree to the Palace of Westminster; 4A.2 Primrose Hill summit to the Palace of Westminster.
The London Plan (policy HC4) designates strategic views, and the Mayor's London View Management Framework (March 2012) gives 13 of them a protected vista toward St Paul's Cathedral, the Palace of Westminster or the Tower of London. A vista has a threshold height that rises or falls with the line of sight. In the landmark viewing corridor, a building above it would harm the view and should be refused. In the wider setting consultation area around the corridor, a building above it is referred for consultation and its effect on the view is judged. The threshold changes along each view and is set out in the framework. A revised framework is out for consultation until 4 December 2026 and is not yet in force.
National infrastructure project: Thames Tideway Tunnel
The site is inside the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, 603 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Archaeological priority area: City of Westminster APA 1.1
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Westminster AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Central activities zone
The core of central London in the London Plan.
Offices, culture and the other strategic functions of the centre take priority over new housing here.
Registered park or garden 59 m away: Palace of Westminster, Westminster Abbey and St. Margaret's Church
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Also on the record
Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square.
Not affected
Not green belt · No scheduled monument at the site
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.
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Important details
- Council
- Westminster
- Application type
- Non-material amendments
- Postcode
- SW1A 2NU
- Received
- 29 Jul 2026
- Validated
- 29 Jul 2026
- Ward
- St James's
- Case officer
- Show
- Target decision
- 26 Aug 2026
- Decision
- Application Permitted
- Decision date
- 5 Aug 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- House of Commons
How this decision compares
Decided in 7 days from validation, 50 days faster than Westminster's median of 57 for listed building works. Approved, as 90% of listed building works here are.
This one7d
Council57d
UK57d
49%decided within 8 weeks
90%approved
2,227decided in the last year
Plota live figures for listed building works decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
Last counted 5 Aug 2026
Consultation & key dates
- Alt. reference
- PP-15118075 - CONFIDENTIAL
- Env. assessment
- No
Historical activity at this location
29 previous applications on record - archival context, not part of the live application.
This property
Previous applications at this address
2019
Partial demolition of the 1980s extension with infilling of existing terrace space at 43…
2019
Partial demolition of the 1980s extension with infilling of existing terrace space at 43…
2019
Creation of openings to Norman Shaw North, Norman Shaw South and the Parliament Street Bu…
2019
Creation of below ground infrastructure ducts, including the creation of openings to Norm…
Within ~100m
Nearby activity
2025
100 Parliament Street London SW1A 2BQ
External Repairs
2025
Approved
Norman Shaw Building South Victoria Embankment London SW1A 2HZ
Alterations to lightwell of Norman Shaw South.
2025
Withdrawn
Palace Of Westminster St Margaret Street London SW1P 3JX
Display of 3 lamp double sided digitally printed PVC column banners along St Margaret Str…
2025
Approved
Norman Shaw Building South Victoria Embankment London SW1A 2HZ
Replacement of boiler flue Norman Shaw South.
2025
Approved
Norman Shaw Building South Victoria Embankment London SW1A 2HZ
Replacement of boiler flue Norman Shaw South.
2025
Approved
Canon Row London
Trial pit investigations
2025
100 Parliament Street London SW1A 2BQ
Repairs to 1no. bay of the stone balustrade at street level on Great George Street.
2025
1 Parliament Street London SW1A 2NE
Installation of electrical equipment - Roof
2025
House Of Commons Palace Of Westminster Parliament Square London SW1A 0AA
Installation of electrical equipment
2025
1 Parliament Street London SW1A 2NE
Installation of electrical equipment.
2025
Public Information Office 1 Derby Gate London SW1A 2DG
Installation of new fence line and vehicle bollards on Derby Gate., removal of existing t…
2025
Public Information Office 1 Derby Gate London SW1A 2DG
Installation of new fence line and vehicle bollards on Derby Gate., removal of existing t…
2024
49 - 53 Parliament Street London SW1A 2NH
Internal alterations
2024
Derby Gate London
Trial pit investigation.
2024
Approved
Public Information Office 1 Derby Gate London SW1A 2DG
Trial pit investigations. (Linked with 24/03012/FULL)
2024
Public Information Office 1 Derby Gate London SW1A 2DG
Trial pit investigations. (Linked with 24/03013/LBC)
2024
48 Parliament Street London SW1A 2NH
Variation of condition 5 of planning permission dated 30th May 2022 (RN:22/01388/FULL) fo…
2024
Approved
House Of Commons Palace Of Westminster Parliament Square London SW1A 0AA
1 x Mulberry (T1): Crown clean removing all dead, diseased, dying, crossing, rubbing and…
2023
Approved
1 Canon Row London SW1A 2JN
Installation of two fan coil units, removal of existing radiator, upgrade of existing and…
2023
Approved
House Of Commons Palace Of Westminster Parliament Square London SW1A 0AA
Alterations to New Palace Yard, changes to access and other arrangements, and changes to…
2016
Approved
1 Parliament Street London SW1A 2NE
Alterations to existing and provision of new security signage around the boundary
2016
Approved
2 Parliament Street London SW1A 2LZ
Alterations to existing and provision of new security signage around the boundary
2016
Approved
3 Parliament Street London SW1A 2LZ
Alterations to existing and provision of new security signage around the boundary
2016
Approved
Norman Shaw Building Victoria Embankment London SW1A 2JF
Alterations to existing and provision of new security signage around the boundary
2016
Approved
Derby Gate London SW1A 2DG
Alterations to existing and provision of new security signage around the boundary and adj…
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Householder decisions
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.
One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application.
View full council performance
Westminster decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #201 of 296
81%
Householder approved
Below avg (90%) #277 of 296
44%
Decided in 8 weeks
Below avg (63%) #258 of 296
28%
Extended time limit
Below avg (41%) #46 of 296
83%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
81%
Change of use approved
133 decided
4,602
Total decisions
648 refused in the year to March 2026
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Parliamentary Estate Parliament Street London SW1A 2NU
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