| Code | Name | Region |
|---|---|---|
| GBABS | Aber Soch (abersoch) | GWN |
| GBABA | Aberaeron | CGN |
| GBAOD | Aberbargoed | CAY |
| GBAEG | Aberbeeg | |
| GBACD | Abercanaid | MTY |
| GBABC | Abercarn | CAY |
| GBARC | Abercastle | PEM |
| GBACF | Abercraf | POW |
| GBAR9 | Abercych | PEM |
| GBACY | Abercynon | RCT |
| GBABE | Aberdare | POW |
| GBADR | Aberdaron | GWN |
| GBABD | Aberdeen | ABE |
| GBAYD | Aberdour | FIF |
| GBABV | Aberdovey | |
| GBABF | Aberdyfi (aberdovey) | GWN |
| GB | ||
| GBBYS | Abbeystead | LAN |
| GBASB | Abbots Bromley | STS |