The Thrombosis Research Institute

Analysis

The Thrombosis Research Institute is a registered charity in England and Wales, based in London. It was registered in November 1988, 38 years ago. Its declared purposes cover the advancement of health or saving of lives, which this site groups under health and saving lives. Legally it is a charitable company (Companies House number 02161565). It says it sponsors or undertakes research.

In the financial year ending July 2025, The Thrombosis Research Institute reported income of £3.4m and spending of £3.2m, spending 94% of its income. Across the 5 years on record, from July 2021 to July 2025, income grew from £3.3m to £3.4m (+4.4%), an average of +1.1% a year. The sharpest change came in the year to July 2024, when income rose by 83%. Over the whole period it spent 138% of the income it received.

Among 24,651 England and Wales charities whose main cause is health and saving lives and that reported income, The Thrombosis Research Institute sits at the 95th percentile: it is larger than about 95% 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 Communities & Neighbourhoods Trust (£3.4m), International Spinal Research Trust (£3.4m) and Heart Research UK (£3.4m).

In its latest detailed accounts, income came from charitable activities 70%, donations and legacies 21% and investments 5.2%. Gifts in wills alone brought in £750. Charitable activities took 100% of spending and raising funds 0.0%. Reserves of £10.1m would cover about 38 months of spending at that rate. It employed 17 people.