From Hare Street, Hertfordshire to all cities in Gwent starting with letter A
- Aberbargoed, Hertfordshire
- Aberbeeg, Hertfordshire
- Abercarn, Hertfordshire
- Abergavenny, Hertfordshire
- Abersychan, Hertfordshire
- Abertillery, Hertfordshire
- Abertridwr, Hertfordshire
- Abertysswg, Hertfordshire
- Allt yr yn, Hertfordshire
- Alway, Hertfordshire
- Argoed, Hertfordshire
- Ashvale, Hertfordshire