- Category: Water Feature
- Type: Island
- Latitude/Longitude: 60°43'35"N 1°7'42"W
- Eastings/Northings: 447646, 1205130
- OS Grid: HP476051
- Mapcode Local: GBR R0KD.9KK
- Mapcode Global: XHF77.QNHB
Location and coordinates are for the approximate centre of Grey Stack within this administrative area.
Geographic features and populated places may cross administrative borders.