- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°2'3"N 5°40'47"W
- Eastings/Northings: 136582, 21404
- OS Grid: SW365214
- Mapcode Local: GBR DXCL.F3K
- Mapcode Global: VH05T.HDMH
Location and coordinates are for the approximate centre of Three Brothers within this administrative area.
Geographic features and populated places may cross administrative borders.