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| Company | Status | Telephone | Net Assets | Turnover | ||
| 1 | Centre For Policy Studies Limited 57 Tufton Street, London, SW1P 3QL | ACTIVE | Upgrade to view | £967.28k | £425.89k | |
| 2 | The European Foundation 55 Tufton Street, London, SW1P 3QL | ACTIVE | Upgrade to view | £464 | – | |
| 3 | Civitas Limited 55 Tufton Street, Westminster, London, SW1P 3QL | ACTIVE | Upgrade to view | £849.72k | £605.22k | |
| 4 | The Taxpayers' Alliance Limited 55 Tufton Street, London, SW1P 3QL | ACTIVE | Upgrade to view | £13.94k | – | |
| 5 | The Global Warming Policy Foundation 55 Tufton Street, Westminster, London, SW1P 3QL | ACTIVE | Upgrade to view | £719.74k | £279.93k | |
| 6 | The New Culture Forum Limited 55 Tufton Street, London, SW1P 3QL | ACTIVE | Upgrade to view | £32.48k | – | |
| 7 | Net Zero Watch Limited 55 Tufton Street, Westminster, London, SW1P 3QL | ACTIVE | Upgrade to view | £256.7k | – | |
| 8 | Avon Strategic Communications LLP 57A Tufton Street, London, SW1P 3QL | ACTIVE | – | – | – | |
| 9 | End Mass Migration Ltd 55 Tufton St, London, SW1P 3QL | ACTIVE | – | – | – |