All postcodes in EC3M 4
| Postcode | Place | Type |
|---|---|---|
| EC3M 4AB | City of London | street |
| EC3M 4AD | City of London | street |
| EC3M 4AE | City of London | large user |
| EC3M 4AJ | City of London | street |
| EC3M 4AQ | City of London | street |
| EC3M 4BE | City of London | street |
| EC3M 4BR | City of London | street |
| EC3M 4BS | City of London | large user |
| EC3M 4BY | City of London | street |
| EC3M 4ST | City of London | large user |
| EC3M 4TD | City of London | large user |