Map
General Information
| Postal Area | Buckinghamshire |
| Postcode | SL1 1DL |
| User Type | Large (more than 25 items of mail per day) |
| Region | South East |
| Country | England |
| Local authority | Slough |
| Introduction Date | 1984-10-01 |
Geographic Information
| Latitude | 51.5083390 |
| Longitude | -0.5902940 |
| Easting | 497931 |
| Northing | 179765 |
| Quality | Within the building of the matched address closest to the postcode mean |