From Morfa, Gwynedd to all cities in Hertfordshire starting with letter A
- Abbots Langley, Gwynedd
- Adeyfield, Gwynedd
- Albury, Gwynedd
- Albury End, Gwynedd
- Aldbury, Gwynedd
- Aldenham, Gwynedd
- Allens Green, Gwynedd
- Amwell, Gwynedd
- Ansells End, Gwynedd
- Anstey, Gwynedd
- Appspond, Gwynedd
- Apsley, Gwynedd
- Ardeley, Gwynedd
- Ashbrook, Gwynedd
- Ashwell, Gwynedd
- Ashwell End, Gwynedd
- Aspenden, Gwynedd
- Aston, Gwynedd
- Aston End, Gwynedd
- Astrope, Gwynedd
- Ayot Green, Gwynedd
- Ayot St Lawrence, Gwynedd
- Ayot St Peter, Gwynedd
- Ayres End, Gwynedd