Winfrith

Winfrith is located on a 84 hectare site in Dorset. It was constructed in the 1950s to enable vital research into reactor design.

The site housed nine experimental reactors at various times with only two remaining today, both of which are being decommissioned.

On this page
Site Owner

Information is presented about wastes that existed at Winfrith at the stock date (1 April 2025) and were forecast to arise after this date.

For background information about this site owner, please refer to the Site Information Sheets in the 2025 UK Radioactive Waste Inventory report.

The following page presents information about radioactive wastes at the specific site selected.

Information about spent fuel and nuclear materials is presented separately in the relevant 2025 Inventory report. For official figures and essential information about how the data has been produced, always refer to the UKRWI 2025 published reports.

View all 2025 waste stream data sheets for Winfrith

Waste groupings

Activated metals
Activated other materials
Asbestos & other insulation materials
Concrete & rubble
Conditioned
Contaminated metals
Contaminated other materials
Desiccant & catalysts
Flocs
Fuel cladding & miscellaneous wastes
Fuel element debris
Fuels & uranium residues
Graphite
High level waste
Inorganic ion exchange materials
Miscellaneous contaminated materials
Mixed wastes
Oils & other fluids
Organic ion exchange materials
Plutonium contaminated materials
Raffinate
Sludges
Soil
Uranium & thorium contaminated material
Total
stored
waste
Future
arising
waste
Lifetime
packaged
waste

Waste categories

Showing results for data originating from Winfrith.

Waste category Volume (m3)
Reported at 1 April 2025 Reported future arisings Lifetime Total
HLW 0 0 0
ILW 4.01 62.0 66.0
LLW 2.52 5,050 5,050
VLLW 0 1,270 1,270
Total 6.53 6,380 6,380
Waste category Volume (m3)
Reported at 1 April 2025 Reported future arisings Lifetime Total
HLW 0 0 0
ILW 8.79 653 662
LLW 4.61 5,450 5,450
VLLW 0 1,270 1,270
Total 13.4 7,370 7,380
Waste category Volume (m3)
Reported at 1 April 2025 Reported future arisings Lifetime Total
HLW 0 0 0
ILW 15.3 1,330 1,350
LLW 4.92 5,580 5,590
VLLW 0 1,270 1,270
Total 20.3 8,190 8,210

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Forecast waste arisings

Location

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From Amersham and AWE Aldermaston to Winfrith and Wylfa – you can source site-by-site waste inventory data from sites across the UK nuclear industry here.