- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°26'10"N 0°31'42"W
- Eastings/Northings: 502376, 171830
- OS Grid: TQ023718
- Mapcode Local: GBR GBD.Z20
- Mapcode Global: VHFTP.S5FB
Location and coordinates are for the approximate centre of Holm Island within this administrative area.
Geographic features and populated places may cross administrative borders.