| Country | United Kingdom (GB) |
| UN/LOCODE | GWR |
| Name | Gilwern |
| Name Without Diacritics | Gilwern |
| Region | MON |
| Function Code | --3----- |
| Function | Road |
| Status Code | RL (Recognised Location) |
| Date | 1301 |
| Timezone | Europe/London |
| Location (UN Format) | 5150N 00305W |
| Latitude Longitude | 51.8248, -3.0936 |