Members A
| 3M United Kingdom Plc |
| A2B |
| AAGE |
| ABB Ltd |
| ABN AMRO |
| ACCA/CAET |
| Accenture |
| Accenture HR Services |
| Acorn |
| The Actuarial Profession |
| Addleshaw Goddard |
| AGCAS |
ADT Fire & Security |
| AIA |
| AIESEC (UK) Ltd |
| Air Products plc |
| Airbus |
| Aker Engineering Services |
| Alexander Mann Solutions |
| Allen And Overy LLP |
| Alliance & Leicester |
| Allianz Cornhill Insurance |
| Alstom Power Service UK |
| Amanda Gartshore |
| AMEC |
| American Express |
| Amey |
| Anglo American plc |
| Anglo Irish Bank |
| Annabel Burrows |
| Aon Ltd |
| Arberry Pink Ltd |
| Arcadia Group Plc |
| Areva T & D UK Ltd |
| Argos |
| Armstrong Transaction Services |
| The Army |
| Arriva |
| Arup |
| ASDA Stores |
| ASE |
| Ashurst |
| Assessment and Development |
| Associated British Ports |
| Association of Business Schools |
| Aston University |
| AstraZeneca |
| Atkins |
| Atos Origin |
| Audit Commission |
| AWE Plc |
| AXA |
| AXA Investment Managers |