Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

This site has had 7 applications since 2023: 2 approved, 0 refused.

• 26/00442/NMA Decided

  Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  Non-material amendment to planning approval 23/00249/FP for minor revisions to the roof and parking layout of the security lodge

  Decided 22 Jun 2026 Amendments
• 25/00878/AD Decided

  Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  Installation of freestanding internally illuminated sign on concrete plinth

  Decided 4 Feb 2026
• 24/00678/COND Granted

  Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  Partial discharge of conditions 8 (construction management plan) and 10 (site waste management plan) attached to planning permission reference number 23/00293/FPM for part of the detailed area.

  Decided 18 Oct 2024 Conditions
• 24/00618/NMA Decided

  Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  Non material amendment to planning permission 23/00293/FPM

  Decided 16 Sep 2024 Amendments
• 23/00289/SCR Decided

  Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  EIA Screening Opinion

  Decided 1 Jun 2023 Outline
• 23/00249/FP Granted

  Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  Construction of replacement security lodge, with associated access, car/cycle parking and landscaping

  Decided 22 May 2023 Full applications

1. 10 Dec 2025

   Received by Stevenage

2. 15 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 4 Feb 2026

   Decision issued

4. 7 Aug 2026

   Added to PlanIndex

• Application: 25/00878/AD (Decided)

Stevenage has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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.

• Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  25/00878/AD Submitted 10 Dec 2025 50 yards away

  Installation of freestanding internally illuminated sign on concrete plinth

  Decided 10 docs

• Land Adjacent To GSK Campus Gunnels Wood Road Stevenage Herts SG1 2FX

  26/00576/S106 Submitted 3 Aug 2026 50 yards away

  88% historically approved · decision due ~12 Oct

  Request to modify the S106 Legal Agreement dated 30 May 2024 in relation to obligations (2.1.1 & 2.1.2) in relation to highways matters approved under planning permission 23/00293/FPM & 25/00893/FPM

  Awaiting decision

• Land Adjacent To GSK Campus Gunnels Wood Road Stevenage Herts SG1 2FX

  25/00803/NMA Submitted 4 Nov 2025 50 yards away

  Non-material amendment to planning permission 23/00293/FPM comprising changes to description of development and amendments to wording of conditions 8, 10, 49, 50 and 51.

  Decided Amendments 3 docs

• Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  26/00442/NMA Submitted 8 Jun 2026 50 yards away

  Non-material amendment to planning approval 23/00249/FP for minor revisions to the roof and parking layout of the security lodge

  Decided Amendments 10 docs

• Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX

  23/00289/SCR Submitted 14 Apr 2023 50 yards away

  EIA Screening Opinion

  Decided Outline 3 docs

• Land Adjacent To GSK Campus Gunnels Wood Road Stevenage Herts SG1 2FX

  26/00578/NMA Submitted 3 Aug 2026 50 yards away

  88% historically approved · decision due ~28 Sep

  Non Material Amendment to planning permission 25/00893/FPM for additional Substation 3 within the Detailed Area, amendments to extent of Detailed / Outline Areas and landscaping, additional Meanwhile Use / Landscape Areas and amendments to conditions

  Awaiting decision Amendments 39 docs

• 26/00560/FP Granted

  17 Made Feld Stevenage Herts SG1 1PG

  Change of use from public amenity land to private residential garden

  Received 28 Jul, published by the council 7 Aug 2026 Full applications
• 26/00667/FP Granted

  93 High Street Stevenage Herts SG1 3HR

  Erection of first-floor rear extension to enlarge the existing office and residential flat, together with external alterations.

  Received 11 Sep, published by the council 14 Sep 2026 Full applications
• 26/00653/FP Decided

  Nine Furlongs Land To The Rear Of 127 Hertford Road Stevenage Herts SG2 8ST

  Removal of Condition 17 (Ecological Appraisal) attached to planning permission reference number 24/00844/FP for erection of 1no. three bedroom chalet bungalow

  Received 7 Sep, published by the council 9 Sep 2026 Full applications
• 26/00728/FP Awaiting decision

  Nine Furlongs Land To The Rear Of 127 Hertford Road Stevenage Herts SG2 8ST

  Erection of 1no. three bedroom chalet bungalow with associated hard and soft landscaping.

  Received 1 Oct, published by the council 2 Oct 2026 Full applications
• 26/00563/FP Decided

  13 Buckthorn Avenue Stevenage Herts SG1 1TT

  Part single storey, part two storey side and rear extensions. Conversion of existing dwelling to 3 no. flats.

  Received 28 Jul, published by the council 11 Aug 2026 Full applications