- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°45'5"N 0°16'28"E
- Eastings/Northings: 560553, 97105
- OS Grid: TV605971
- Mapcode Local: GBR MVF.XXK
- Mapcode Global: FRA C7G3.8S7
Location and coordinates are for the approximate centre of Holywell Ledge within this administrative area.
Geographic features and populated places may cross administrative borders.