The British Interplanetary Society

Analysis

The British Interplanetary Society is a registered charity in England and Wales, based in London. It was registered in February 1967, 59 years ago. Its declared purposes cover education/training and arts/culture/heritage/science, which this site groups under arts, culture, heritage and science. Legally it is a charitable company (Companies House number 00402498). It says it provides services, provides advocacy/advice/information and sponsors or undertakes research.

In the financial year ending August 2025, The British Interplanetary Society reported income of £357k and spending of £544k, spending 152% of what it took in. Across the 5 years on record, from August 2021 to August 2025, income fell from £402k to £357k (-11%), an average of -2.9% a year. The sharpest change came in the year to August 2024, when income rose by 101%. Over the whole period it spent 96% 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, The British Interplanetary Society sits at the 90th percentile: it is larger than about 90% of them. Against every charity in England and Wales with reported income it ranks in the 87th percentile. Charities of a similar size with the same main cause include The Wadenhoe Trust (£357k), St Just and St Mawes Heritage Group (£357k) and The British-German Association (£356k).