The Bermuda National Grid 2000 (BNG) is a kind of

Transverse Mercator projection The transverse Mercator map projection (TM, TMP) is an adaptation of the standard Mercator projection. The transverse version is widely used in national and international mapping systems around the world, including the Universal Transverse Mercat ...

. It is not a

Universal Transverse Mercator The Universal Transverse Mercator (UTM) is a map projection system for assigning coordinates to locations on the surface of the Earth. Like the traditional method of latitude and longitude, it is a horizontal position representation, which means i ...

(UTM) projection, as it has an origin and other parameters that are different from those used in UTM. Grid Parameters: {, class="wikitable" , - , Origin latitude , 32.0 degrees (North) , - , Origin longitude , -64.75 degrees (East) , - , Scale , 1.0 , - , Reference ellipsoid ,

WGS84 The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS. The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also descr ...

, - , False easting , 550,000.0 meters , - , False northing , 100,000.0 meters , -

References

Online resources:
Convert from BNG to lat/lon in Google earth

Eye4Software's online converter
Map projections Geography of Bermuda