SW1A 1HL is a postalcode and its consensus geometry is derived from os.
{"os:positional_quality_indicator":"1","date:inception_upper":"2003-01-01","geom:latitude":51.505303,"wof:name":"SW1A 1HL","counts:names_total":0,"mz:is_current":0,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633159,"empire_id":136253055,"postalcode_id":487748683,"postalregion_id":1864210853}],"date:cessation_outer_end":1514851199,"date:cessation_inner_end":1514851199,"geom:area":0,"date:cessation_lower":"2018-01-01","counts:concordances_total":1,"date:inception_inner_end":1041465599,"geom:type":"Point","wof:lastmodified":1709396328,"wof:belongsto":[85633159,102191581,136253055,1864210853],"wof:repo":"whosonfirst-data-postalcode-gb","date:inception_lower":"2003-01-01","wof:country":"GB","counts:names_preferred":0,"geom:area_square_m":0,"os:region_code":"E12000007","counts:names_variant":0,"wof:breaches":[],"edtf:inception":"2003-01-01","iso:country":"GB","geom:bbox":"-0.139021,51.505303,-0.139021,51.505303","date:inception_outer_start":1041379200,"wof:superseded_by":[],"wof:geomhash":"c586304a1ed68eed89429a732f934a0f","wof:placetype_id":470996387,"os:district_code":"E09000033","date:cessation_upper":"2018-01-01","mz:is_ceased":1,"wof:created":1583701149,"wof:placetype":"postalcode","mz:is_deprecated":0,"date:cessation_inner_start":1514764800,"geom:longitude":-0.139021,"date:inception_inner_start":1041379200,"wof:id":487748683,"os:county_code":"E99999999","date:inception_outer_end":1041465599,"wof:concordances":{"gp:id":"28005795"},"date:cessation_outer_start":1514764800,"src:geom":"os","wof:tags":[],"counts:names_languages":0,"os:country_code":"E92000001","wof:supersedes":[],"wof:parent_id":1864210853,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"edtf:cessation":"2018-01-01"}