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Planning application

PL/26/01955/NMA

HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

Decided Buckinghamshire Non Material Amendment

Proposal

Proposed non-material amendment to planning permission 21/02851/AOP (allowed on appeal 22/00125/REF) (Outline Planning Application with all matters reserved except for access, layout and scale for the construction of a new Category C prison (up to 67,000 sqm GEA) within a secure perimeter fence together with access, parking, landscaping and associated engineering works) to allow for amendment to wording of Condition 26.

As published by the council, reference PL/26/01955/NMA

Timeline

Dates from the published record

  1. 10 Mar 2026

    Received by Buckinghamshire

  2. 2 Apr 2026

    Decision issued: Non material amendt-accepted

  3. 3 Aug 2026

    Added to PlanIndex

After the decision

The process from here

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

About amendments applications

How this application type works

An amendment application changes a permission that already exists. Non-material amendments cover small adjustments with no wider effect, while minor material amendments, usually made by varying a condition, allow modest design changes without a fresh application. Anything beyond that needs a new permission, so the scope here is deliberately narrow.

More on amendments applications in our guide

Nearby applications

Within 500 metres

  • 21/B2851//NON Decided

    Hm Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

    Proposed non-material amendment to permission for Outline Planning Application with all matters reserved except for access, layout and scale for the construction of a new Category C prison (up to 67,000 sqm GEA) within a secure perimeter fence together with access, parking, landscaping and associated engineering works granted under planning ref: 21/02851/AOP (allowed on appeal 22/00125/REF)

    15 Jul 2025 0m away Amendments
  • PL/25/2838/MDLA Awaiting decision

    HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

    Application to amend section 106 agreement to trigger for submission and approval of travel plan prior to occupation relating to 21/02851/AOP

    14 Aug 2025 51m away Conditions
  • PL/25/5758/MDLA Decided

    HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

    Application under Section 106 of the Town & Country Planning Act 1990 (as amended) to discharge planning obligation at First Schedule, Part 2, (Highway Works Delivery Programme) of the Section 106 Agreement for application 21/02851/AOP

    20 Nov 2025 69m away Conditions
  • HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

    Application for approval of details subject to condition 37 (surface water drainage) relating to Planning Permission 21/02851/AOP (allowed on appeal 22/00125/REF)

    19 Dec 2025 128m away Conditions
  • PL/25/3123/SA Granted

    HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

    Certificate of lawfulness for proposed creation of temporary construction access

    22 Aug 2025 142m away Lawful development

In Buckinghamshire

  • PL/26/06121/NMA Awaiting decision

    4 Chequers Lane Cadmore End Buckinghamshire HP14 3PQ

    Non-material amendment to planning permission 23/05813/FUL (Householder application for roof alterations including increase in ridge height and extended gable to rear, construction of two storey side, two storey front and rear extensions and external alterations (alternative scheme to pp 22/07275/FUL) Amendment to remove 2no. velux windows on south east elevation. Change Bifolding door to a French door to match existing as shown on south east elevation and change door on first floor onto balcony to window matching existing windows shown on South West elevation. To Render from ground up to damp course instead of using brick slips

    30 Jul 2026 Amendments
  • PL/26/06081/NMA Awaiting decision

    Land at Gatehouse Close Former Moeller Complex Aylesbury Buckinghamshire

    Non-material amendment to planning permission ref: 21/04113/APP (Development comprises the demolition of existing industrial buildings and the erection of new buildings (5no. units) for flexible Class E(g) ((i)offices, (ii) research and development, (iii) industrial processes), B2 (general industrial) and B8 (storage / distribution) including ancillary offices, landscaping, access points off Gatehouse Close, car and cycle parking and associated engineering works) to allow for the location of the EV car charging bays relocated away from building facades in accordance with current building insurance fires safety requirements, trees relocated in accordance with landscape architects revised planting plan, external paving slabs revised to block paviors and buildings perimeter maintenance paths revised to brushed concrete.

    29 Jul 2026 Amendments
  • PL/26/05956/NMA Awaiting decision

    16 Duffield Lane Stoke Poges Buckinghamshire SL2 4AB

    Non-material amendment to planning permission PL/24/1003/FA (Two storey rear, part two, part single storey front extensions, addition of rooflights to the side elevations and garage conversion to living space) to allow for amendment to incorrectly referenced drawings relating to condition 6 on the decision notice

    24 Jul 2026 Amendments
  • PL/26/05901/NMA Awaiting decision

    Spinfield Oaks Spinfield Lane West Marlow Buckinghamshire SL7 2DB

    Non material amendment to planning permission ref: PL/25/4191/FA (Demolition of existing dwelling house and the erection of new self-build dwelling house with attached garaging and external landscaping) to allow for the moving of the 1st garage pedestrian door 70cm to the right, removal of the 2nd garage pedestrian door and the addition of two front facing windows to the front elevation of garage.

    24 Jul 2026 Amendments
  • PL/26/05953/NMA Awaiting decision

    24 Woodlands Gerrards Cross Buckinghamshire SL9 8DD

    Non material amendment to planning permission PL/25/1113/FA (Conversion of existing integral garage at lower ground floor level to home office and construction of single storey detached triple garage. External and fenestration alterations including cavity brickwork, new staircase and driveway alterations ) to reduce size of garage

    24 Jul 2026 Amendments