| Country | United Kingdom (GB) |
| UN/LOCODE | GAM |
| Name | Great Amwell |
| Name Without Diacritics | Great Amwell |
| Region | HRT |
| Function Code | --3----- |
| Function | Road |
| Status Code | AF (Approved by National Facilitation Body) |
| Date | 9704 |
| Timezone | Europe/London |
| Latitude Longitude | 51.7901, -0.0167 |