Listed below are some of the institutional investors with whom Thompson Clive is or has been involved:
| Axa Sun Life plc | Murray Johnstone Ltd |
| Baillie Gifford & Co | National Provident Institution |
| Bloomberg LP | Newton Management Ltd |
| Britel Fund Nominees Ltd | Northern Investors Ltd |
| British Aerospace Pension Fund | Panmure Gordon & Co Ltd |
| Brown Shipley Development Capital Ltd | Pantheon Ventures Ltd |
| CIN Industrial Investments Ltd | Prudential Venture Managers Ltd |
| Charter Consolidated Pension Trustees Ltd | Prudential Insurance Company of America, The |
| Church Commissioners for England | Refuge Assurance plc |
| Clerical Medical Investment Management Ltd | J Henry Schroder Wagg & Co Ltd |
| Close Brothers Group plc | Scottish Investment Trust plc |
| Commercial Union Assurance Co plc | Scottish Value Trust plc |
| Compagnie Financière de Suez | Scottish Widows Fund & Life Assurance Society |
| Compagnie de Penhoet | Security Pacific Capital Corporation |
| Co-operative Insurance Society Ltd | Sun Life Assurance Society plc |
| Corporation of Lloyds | Touche Remnant & Co |
| Eagle Star Group plc | Trinity College, Cambridge |
| Electra Investment Trust plc | Wellcome Trust plc |
| Equitable Life Assurance Society, The | West Midlands Metropolitan Authorities |
| Fleming Technology Investment Trust plc | Superannuation Fund |
| GT Management plc | WH Smith Pension Trust Ltd |
| Gartmore Investment Management Ltd | United Assurance Group Plc |
| Granville Private Equity Managers Ltd | United Friendly Asset Management Ltd |
| Halifax Group plc | Wolverhampton Borough Council |
| Hambros Bank Ltd | Worms & Co |
| Harvard Management Co Inc | Yeoman Investment Trust plc |
| Henderson Administration plc | |
| 3i Group plc | |
| Imperial Chemical Industries Pension Funds | |
| Imperial Group Pension Funds | |
| Investco N.V. | |
| Kentinvest Ltd | |
| Kleinwort Development Fund | |
| Lazard Investors Ltd | |
| Legal and General Assurance Society Ltd | |
| London & Manchester Assurance Co Ltd | |
| Mercury Asset Management Ltd | |
| Merchant Investors Assuance Co Ltd |