OS X (Eastings) 529731 OS Y (Northings) 181011 Nat Grid TQ297810 / TQ2973181011 Nearest Post Code W1D 4TY Lat (WGS84) N51:30:47 (51.51313816152513) Long (WGS84) W0:07:55 (-0.13185648723593726) Lat,Long (WGS84) 51.51313816152513,-0.13185648723593726 Lat (OSGB36) N51:30:45 (51.51262846947683) Long (OSGB36) W0:07:49 (-0.13025021230030198) Lat,Long (OSGB36) 51.51262846947683,-0.13025021230030198 what3words notes.guess.class Open Loc/Plus code 9C3XGV79+772