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