- Capita Financial Managers Ltd
- Capital International
- Cavendish Unit Trust Mgmt
- Cazenove Intl Asset Mgmt
- Cazenove Investment Fd Mgt
- CF Lord Abbett Invstmt Funds
- CF Ruffer Investment Funds
- Charlemagne Capital Ltd
- Chartwell Group Limited
- Chelverton Asset Management Limited
- CIS Unit Managers Ltd
- City Financial Investment Company
- City of London Inv Mgt Co
- Clerical Medical UT Managers
- Close Finsbury Asset Mgmt Ltd
- Close Investments (UK) Limited
- CMI Asset Management (Lux) SA
- Collins Stewart Asset Management
- Collins Stewart Fd Mgt Ltd GZ
- Comgest Asset Management
- Comgest S.A
- Consistent Unit Trust Mgmt
- Courtiers
- Coutts Fd Manager Ltd (Dublin)
- Cowen Asset Management Lmtd
- Credit Suisse Asset Mgmt (UK)
- Crédit Agricole
