I keep getting asked for the WAB squares that cover the Bailiwick of Guernsey.
WAB area reference areas take the form of a “SO99” style reference, this reference is based on the 10 x 10 km grid squares on the U.K. Ordinance Survey (Government) Map, the WAB reference can span more than one County.
WAB squares have no relationship to WW grid locators.
For a more detailed information please see the Worked All Britain groups website