- M&G Group
- Majedie Asset Mgt Inv Fd Co
- Manek Investment Management
- Manulife Global Fund Ltd
- Manulife
- Margetts Fund Mgmt Ltd
- Marks & Spencer UT Mgmt
- Marlborough Fd Mgrs
- Marshall Wace LLP
- Martin Currie Investment Mgmt
- Martin Currie Unit Trusts
- Mayflower Management Company Limited
- McHattie Investment Mgt Ltd
- McInroy & Wood Portfolios Limited
- Mercer Global Investments Man Ltd
- Merrill Lynch
- Metzler Ireland Ltd
- MFS International Ltd.
- MFS International
- Mgi Pharma Inc
- Mirabaud Unit Trust Managers Limited
- Mitsubishi UFJ Asset Management (UK)
- MLC Trust Mgmt Co Ltd
- MM Asset Management Limited
- Montanaro Fund Managers Ltd
- Monument Asset Mgmt Ltd
- Morgan Stanley Funds (UK)
- Morgan Stanley Funds Plc
- Morgan Stanley Investment Mgt
- MPC Competence Sicav
- MT Fund Management Ltd
