Johnson Matthey Technology Centre, Blount’s Court Road, Sonning Common RG4 9NH

1. 14 Sep 2026

   Received by South Oxfordshire

2. 26 Sep 2026

   Added to PlanIndex

South Oxfordshire 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.

Applications for works to trees cover protected trees: consent under a tree preservation order, or six weeks notice for trees in a conservation area. More in our guide to planning application types.

• Johnson Matthey Technology Centre Blount's Court Sonning Common RG4 9NH

  P17/S0686/DIS Submitted 20 Feb 2017 50 yards away

  P16/S3787/FUL Alterations to main site entrance to segregate pedestrians from vehicular traffic and to provide visibility for pedestrians and vehicles leaving the site. Discharge of condition 3 - Construction materials.

  Decided Conditions 4 docs

• Johnson Matthey Technology Centre, Blounts Court Road, Sonning Common, RG4 9NH

  P21/S2976/TPO Submitted 30 Jun 2021 50 yards away

  301 - Sycamore - prevent further garden waste from being left at base. (G1). 315 - Cypress Monterey - lift selected laterals to allow 4m clearance in height and reduce back 1m from kerb edge (G2). 318 - Scots Pine - no further works at this time (G2). 330 - Redwood x 2 - remove minor deadwood to reduce likelihood of failure (G3). 333 - Lime - remove epicormic growth to 3m above ground level to facilitate future inspection and reinspect (G3). 335 - Lime - reduce back previously pruned branches on south-eastern aspect, back to point of previous pruning to maintain clearance from tank and associated ducting (G3). 337 - Redwood - reduce low southern branches by approx 2m. Remove moderate deadwood to south in lower crown over compound (G3). 339 - Oak - no further works. 341 - Tulip - monitor. 343 - Monkey Puzzle - no works required (T1). 351 - Sweet Chestnut - remove major deadwood (G5). 354 - Lime - remove major deadwood to reduce likelihood of failure (G5). 414 - Holm Oak - no further works. (G5). 348 - Redwood - remove moderate deadwood from lower aspect of crown, to reduce likelihood of failure (G5). 368 - Scots Pine - climbing inspection to further ascertain any decay formation (G5). 369 - Sweet Chestnut - no further works (G5). G4 - Mixed/Oak - no further works. (G5). 386 - Beech - remove moderate deadwood from northern aspect to reduce likelihood of failure (G6). 400 - Spruce - remove moderate deadwood in lower crown to reduce likelihood of failure over footpath. (G6). 400A - Spruce - remove moderate deadwood in lower crown, to reduce likelihood of failure over footpath (G6). 408 - Liquid Amber - fell to ground level. (G6). 395 - Beech - remove moderate deadwood to reduce likelihood of failure over footpath. (G6/G7). 435 - Dawn Redwood - remove moderate deadwood to remove likelihood of failure over footpath (T11). 448 - Oak - remove major deadwood over road to reduce likelihood of failure. Sever ivy to facilitate future inspections. (G8). 456 - Indian Bean Tree - fell to ground level. 459 - Red Oak - remove deadwood to reduce likelihood of failure. Install 1m mulch circle around base of tree. Monitor foliage vigour. (T14). 471 - Cherry - consider felling to ground level. 477 - Yew - trim to contain on footpath side up to approx 4m. G480 - Sycamore - selectively remove low laterals to source to reduce further encroachment issues. 482 - Ash - sever ivy and reinspect unions once ivy has died off. Remove limbs that are growing toward lamp post to provide approx 2m clearance. Remove heavy limb on southeast to primary union. Remove limbs to east to source provide approx 2m clearance. 484 - Ash - raise lower branches to approx 4m. 486 - Sycamore - sever ivy to allow future inspections. Tip back lower branches over street light, to improve light ingress into car park. Monitor condition of wound. G5 - Mixed - sever ivy on ash and beech within group. Raise beech tree over gate entrance to approx 5m, to maintain adequate road clearance. 426 - Hornbeam - dismantle to ground level. Grind resultant stump to approx 300mm below ground level leaving arisings within bole.

  Decided Trees 3 docs

• Johnson Matthey Technology Centre Blounts Court Road Sonning Common RG4 9NH

  P16/S3787/FUL Submitted 14 Nov 2016 50 yards away

  Alterations to main site entrance to segregate pedestrians from vehicular traffic and to provide improved visibility for pedestrians and vehicles leaving the site. (Amended by plan 16.2311.03A to increase area of walkway to south of Blounts Court Road and provide painted directions for pedestrians).

  Granted Full applications 12 docs

• Johnson Matthey Technology Centre, Blounts Court Road, Sonning Common, RG4 9NH

  P22/S4069/TPO Submitted 8 Nov 2022 50 yards away

  Gr1 - Mixed Hazel Conifer Beech Ash (not TPO) - prune back to just beyond kerb up to 3m in height. 301 - Sycamore - (not TPO) - monitor vitality. 303 - Leylandii - (not TPO) - remove broken branch, carry out climbing inspection. - Leylandii - (not TPO) - see observations. 318 - Scots Pine - (not TPO) - monitor development of fruiting body, consider removal. 323 - Cedar - (TPO G2) - maintain clearance of up to 2m. Reduce x1 identified eastern over extended branch by up to 1.5m. Gr2 - Laurel - (not TPO) - ensure adequate clearance by pruning away from structure, broadly as indicated. 351 - Sweet Chestnut - (TPO G5) - reduce height by approx 6m to mitigate changes of further failure. 362 - Beech - (TPO G5) - lift crown to 3m. 431 - Coastal Redwood - (TPO T11) - remove moderate deadwood above 50mm dia. Remove trapped branch. Carry out climbing inspection to ascertain structural condition. 407 - Blue Cedar - (TPO G5) - reduce eastern upper corner by up to 1.5m to suitable secondary growth points. Taper into profile leaving balanced crown. Remove trapped branches. 421 - Snake Bark Maple - (not TPO) - monitor. 458 - Stone Pine - (not TPO) - monitor.

  Granted Trees 2 docs

• Johnson Matthey Technology Centre Blounts Court Road Sonning Common RG4 9NH

  P24/S0504/DIS Submitted 12 Feb 2024 50 yards away

  Discharge of condition 6 (Biodiversity Gain Plan (prior to commencement) on application P23/S2159/FUL (Installation of three chiller units to support existing site operations with associated pipework and screening).

  Granted Conditions 5 docs

• Johnson Matthey Technology Centre, Blounts Court Road, Sonning Common, RG4 9NH

  P22/S0302/TPO Submitted 24 Jan 2022 50 yards away

  1. T368 Scots Pine in decline a. Fell to just above ground level

  Decided Trees 2 docs

• P26/S4200/TCA Decided

  The Old Farmhouse Lower Green Towersey Thame OX9 3QW

  Willow x1 - pollard crown back to original pollard points.

  Received 18 Sep, published by the council 26 Sep 2026 Trees
• P26/S3948/TCA Decided

  Iden House Bakers Lane Brightwell-cum-sotwell Wallingford OX10 0PY

  T1 poplar fell to ground, due to the proximity to neighbouring properties and a concern from the homeowner regarding the overall size of the tree

  Received 4 Sep, published by the council 8 Sep 2026 Trees
• P26/S3921/TCA Decided

  Riverside House Waterstock Oxford OX33 1JT

  Willow, fallen stem, Fell. Ash, a group of 3, dead fell. Birch, dead, a group of 2 trees, Fell Ash, Class 3 Ash Dieback, Fell Sycamore, dead Fell.

  Received 3 Sep, published by the council 8 Sep 2026 Trees
• P26/S3346/TPO Granted

  The Maples Woodlands Road Harpsden Henley-on-thames RG9 4AA

  T13 - Walnut. Ideally remove part of the tree, however possible fell

  Received 4 Aug, published by the council 15 Aug 2026 Trees
• P26/S4144/TCA Decided

  Burgage Court 95 Southern Road Thame OX9 2ED

  T1 Silver Birch Observations: T1 requires general maintenance - overhangs several gardens. Overextending limbs growing in a southerly direction require containing to bring into a balanced shape. Recommendations: Crown Reduction - Reducing the height by 3 metres and spread of the tree by up to 2 metres. Overextending limbs require 3 metres off.

  Received 16 Sep, published by the council 26 Sep 2026 Trees