OS X (Eastings) 530618 OS Y (Northings) 181399 Nat Grid TQ306813 / TQ3061881399 Nearest Post Code WC2A 3LH Lat (WGS84) N51:30:59 (51.51642078483572) Long (WGS84) W0:07:08 (-0.11893780805216848) Lat,Long (WGS84) 51.51642078483572,-0.11893780805216848 Lat (OSGB36) N51:30:57 (51.51591126637687) Long (OSGB36) W0:07:02 (-0.11732992792698971) Lat,Long (OSGB36) 51.51591126637687,-0.11732992792698971 what3words sings.case.decay Open Loc/Plus code 9C3XGV8J+HC7