Wimbledon Windmill Museum CIO

Analysis

Wimbledon Windmill Museum CIO is a registered charity in England and Wales, based in London. It was registered in July 2015, 11 years ago. Its declared purposes cover education/training and environment/conservation/heritage, which this site groups under environment and conservation. Legally it is a charitable incorporated organisation (CIO). It says it provides buildings/facilities/open space and provides services.

In the financial year ending December 2025, Wimbledon Windmill Museum CIO reported income of £14k and spending of £9,436, leaving 30% of income unspent that year. Across the 5 years on record, from December 2021 to December 2025, income fell from £23k to £14k (-40%), an average of -12% a year. The sharpest change came in the year to December 2022, when income dropped by 61%. Over the whole period it spent 103% of the income it received.

Among 4,574 England and Wales charities whose main cause is environment and conservation and that reported income, Wimbledon Windmill Museum CIO sits at the 51st percentile: it is larger than about 51% of them. Against every charity in England and Wales with reported income it ranks in the 37th percentile. Charities of a similar size with the same main cause include Stirton Water Trust (£14k), The Friends of Marbury Country Park and Anderton Nature Park (£14k) and Friends of Abbeyfields School (£13k).