- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°52'3"N 5°15'8"W
- Eastings/Northings: 176186, 223787
- OS Grid: SM761237
- Mapcode Local: GBR C6.SFW1
- Mapcode Global: VH0TL.XB42
Location and coordinates are for the approximate centre of Penpleidian within this administrative area.
Geographic features and populated places may cross administrative borders.