Exchanges
| Code | Name |
|---|---|
| ESASB | Abbey St Bathans |
| LCABT | Abbeytown |
| EMABBOT | Abbots Bromley |
| EMABRIP | Abbots Ripton |
| STABTSY | Abbotsbury |
| STABTAN | Abbotts Ann |
| SWAAI | Aberaeron |
| NSABC | Aberchirder |
| WNABC | Aberconwy |
| SWAAV | Abercrave |
| SWABT | Abercynon |
| SWAA | Aberdare |
| WNADR | Aberdaron |
| NSASH | Aberdeen Ashgrove |
| NSBLG | Aberdeen Balgownie |
| NSBDS | Aberdeen Bieldside |
| NSBBN | Aberdeen Bucksburn |
| NSCTR | Aberdeen Culter |
| NSDEN | Aberdeen Denburn |
| NSDYC | Aberdeen Dyce |
| NSKNC | Aberdeen Kincorth |
| NSKNL | Aberdeen Kinellar |
| NSKGW | Aberdeen Kingswells |
| NSLNG | Aberdeen Lochnagar |
| NSNTH | Aberdeen North |
| NSPRT | Aberdeen Portlethen |
| NSWES | Aberdeen West |
| ESABR | Aberdour |
| WNADV | Aberdovey |
| ESABY | Aberfeldy |
| ESABF | Aberfoyle |
| SWAG | Abergavenny |
| WNAGE | Abergele |
| WNAGY | Abergynolwyn |
| SWAAZ | Aberkenfig |
| ESABE | Aberlady |
| ESABL | Aberlemno |
| NSABL | Aberlour |
| WNAMU | Abermule |
| ESABN | Abernethy |
| SWAPO | Aberporth |
| WNASO | Abersoch |
| SWABD | Abertillery |
| WNAE | Aberystwyth |
| SMAI | Abingdon |
| THAG | Abinger |
| NSABO | Aboyne |
| SSABS | Abson |
| LCACC | Accrington |
| NSATB | Achiltibuie |