CH1 1AN is a postalcode and its consensus geometry is derived from os.
{"os:positional_quality_indicator":"8","date:inception_upper":"1990-02-01","geom:latitude":53.190455,"wof:name":"CH1 1AN","counts:names_total":0,"mz:is_current":0,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633159,"empire_id":136253055,"postalcode_id":38424429,"postalregion_id":1864206239}],"date:cessation_outer_end":817862399,"date:cessation_inner_end":817862399,"geom:area":0,"date:cessation_lower":"1995-12-01","date:inception_inner_end":633916799,"geom:type":"Point","wof:lastmodified":1709395797,"wof:belongsto":[85633159,102191581,136253055,1864206239],"wof:repo":"whosonfirst-data-postalcode-gb","date:inception_lower":"1990-02-01","wof:country":"GB","counts:names_preferred":0,"os:region_code":"E12000002","counts:names_variant":0,"wof:breaches":[],"edtf:inception":"1990-02-01","iso:country":"GB","geom:bbox":"-2.890466,53.190455,-2.890466,53.190455","date:inception_outer_start":633830400,"wof:superseded_by":[],"wof:geomhash":"98c4afdeb18474a5f75169455f0ebdc2","wof:placetype_id":470996387,"os:district_code":"E06000050","date:cessation_upper":"1995-12-01","mz:is_ceased":1,"wof:created":1583790206,"wof:placetype":"postalcode","mz:is_deprecated":0,"date:cessation_inner_start":817776000,"geom:longitude":-2.890466,"date:inception_inner_start":633830400,"wof:id":38424429,"os:county_code":"E99999999","date:inception_outer_end":633916799,"date:cessation_outer_start":817776000,"src:geom":"os","wof:tags":[],"counts:names_languages":0,"os:country_code":"E92000001","wof:supersedes":[],"wof:parent_id":1864206239,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"edtf:cessation":"1995-12-01"}