- Category: Water Feature
- Type: Island
- Latitude/Longitude: 54°15'38"N 0°22'12"W
- Eastings/Northings: 506267, 486223
- OS Grid: TA062862
- Mapcode Local: GBR TMV5.NF
- Mapcode Global: WHGC7.950H
Location and coordinates are for the approximate centre of Perilous Rocks within this administrative area.
Geographic features and populated places may cross administrative borders.