| Country | United Kingdom (GB) |
| UN/LOCODE | BYU |
| Name | Little Chalfont |
| Name Without Diacritics | Little Chalfont |
| Region | BKM |
| Function Code | -23----- |
| Function | Rail, Road |
| Status Code | AQ () |
| Date | 601 |
| Timezone | Europe/London |
| Location (UN Format) | 5140N 00034W |
| Latitude Longitude | 51.6683, -0.5704 |