- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°37'10"N 2°13'16"W
- Eastings/Northings: 384442, 80008
- OS Grid: SY844800
- Mapcode Local: GBR 229.36Y
- Mapcode Global: FRA 677F.GG3
Location and coordinates are for the approximate centre of Mackerel Rock within this administrative area.
Geographic features and populated places may cross administrative borders.