From Walnuttree Green, Hertfordshire to all cities in Essex starting with letter A
- Abberton, Hertfordshire
- Abbess End, Hertfordshire
- Abbess Roding, Hertfordshire
- Abbey Field, Hertfordshire
- Abridge, Hertfordshire
- Aimes Green, Hertfordshire
- Aingers Green, Hertfordshire
- Aldham, Hertfordshire
- Almshouse Green, Hertfordshire
- Alphamstone, Hertfordshire
- Alresford, Hertfordshire
- Althorne, Hertfordshire
- Ardleigh, Hertfordshire
- Ardleigh Heath, Hertfordshire
- Ardley End, Hertfordshire
- Arkesden, Hertfordshire
- Armigers, Hertfordshire
- Ashdon, Hertfordshire
- Asheldham, Hertfordshire
- Ashen, Hertfordshire
- Ashingdon, Hertfordshire
- Audley End, Hertfordshire
- Audley End, Hertfordshire
- Aveley, Hertfordshire
- Aythorpe Roding, Hertfordshire