| Abbreviation | Definition |
|---|---|
| APS | Alpha Strategic (de-listed) |
| APT | Axa Property |
| APT | AXA Property Trust, LTD. Ordinary shares |
| AQP | Aquarius Plat. |
| AQT3 | Acuity Vct 3 |
| AQT3 | Acuity VCT 3, P.L.C. Ordinary shares (de-listed) |
| AQT3 | Acuity VCT 3, P.L.C. Ordinary shares (de-listed) |
| AR. | Archipelago Res |
| ARA | Ardana |
| ARBB | Arbuthnot |
| ARC | Arcontech Group, P.L.C. |
| ARCH | Arc Capital |
| ARCL | Altus Res. |
| ARDN | Arden Partners |
| ARE | Arena Leisure |
| AREO | Argo Real Est. |
| ARG | Argos Resources |
| ARGO | Argo Group |
| ARM | Arm Hldgs. |
| ARP | Ashcourt Rowan |