Thames21 Limited

Analysis

Thames21 Limited is a registered charity in England and Wales, based in London. It was registered in May 2004, 22 years ago. Its declared purposes cover general charitable purposes, education/training, arts/culture/heritage/science and animals, which this site groups under arts, culture, heritage and science. Legally it is a charitable company (Companies House number 04985828). It says it provides services, provides advocacy/advice/information and sponsors or undertakes research.

In the financial year ending March 2025, Thames21 Limited reported income of £3.2m and spending of £3.3m, spending 104% of its income. Across the 5 years on record, from March 2021 to March 2025, income grew from £1.1m to £3.2m (+196%), an average of +31% a year. The sharpest change came in the year to March 2022, when income rose by 110%. Over the whole period it spent 95% of the income it received.

Among 17,634 England and Wales charities whose main cause is arts, culture, heritage and science and that reported income, Thames21 Limited sits at the 98th percentile: it is larger than about 98% of them. Against every charity in England and Wales with reported income it ranks in the 97th percentile. Charities of a similar size with the same main cause include Titchfield Festival Theatre Limited (£3.2m), The Royal Society of Biology (£3.2m) and Museum of Modern Art Limited (£3.1m).

In its latest detailed accounts, income came from charitable activities 78% and donations and legacies 21%. Charitable activities took 93% of spending and raising funds 5.9%. Reserves of £421k would cover about 2 months of spending at that rate. It employed 49 people.