{"series":{"id":"ONS.CPI.ALL.YOY.M","label":"United Kingdom CPI all-items inflation, year on year","unit":"%","freq":"M","decimals":1,"format":"percent","source_id":"ons","source_name":"Office for National Statistics","source_url":"https://www.ons.gov.uk/economy/inflationandpriceindices/timeseries/d7g7/mm23","licence":"Open Government Licence v3.0","redistribution_permitted":true,"resale_permitted":true,"attribution_text":"Contains Office for National Statistics information licensed under the Open Government Licence v3.0.","notes":"Current edition history; original per-row vintages/release times unknown. All-items CPI, not CPIH. Seasonal adjustment and historical revision status not declared. Native annual rate; not recomputed from rounded CPI index.","topic":"inflation","definition":{"unit":"%","dataset":"MM23","precision":"one decimal as published; raw source text retained","selection":{"cdid":"D7G7","measure":"CPI all-items native year-on-year growth","frequency":"M","geography":"GBR"},"price_basis":null,"growth_basis":"native year-on-year percent; no recomputation","native_title":"CPI ANNUAL RATE 00: ALL ITEMS 2015=100","history_origin":"1989-01","calendar_period":"calendar month","seasonal_adjustment":null,"source_rights_scope":"own ONS aggregate numeric statistics under OGL3.0; exclusions retained","price_reference_year":2015,"observation_status_rule":"unknown; source supplies no per-row revision flag","source_publication_date":"2026-10-21","seasonal_adjustment_if_absent":"unknown; no adjustment inferred"},"definition_hash":"1551977af5d7c82eac954fa597cae45c70b25ba8c53008918c05bcba0763b731","source_captures":[{"url":"https://www.ons.gov.uk/generator?format=csv&uri=/economy/inflationandpriceindices/timeseries/d7g7/mm23","method":"GET","sha256":"f849c7535125edb6532c3c24772247c2dccb241345e6b5122eaa4bf08f69610d","byte_count":10807,"retrieved_at":"2026-11-12T23:21:55.611681+00:00","capture_sha256":"5ed7cc72c62397e0626b63548824570d9af83a9eed10747ee10d4dd3365ff756","request_body_sha256":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},{"url":"https://www.ons.gov.uk/economy/inflationandpriceindices/timeseries/d7g7/mm23","method":"GET","sha256":"59d4f7435a5fde465b296c82a0f47d36abfeb96b38a72c718693b456d2323cdc","byte_count":206347,"retrieved_at":"2026-11-12T23:21:56.283253+00:00","capture_sha256":"cd67906bb1eae2266bc47d6a7b4118fd121035dbeda79750ea1730df3920b651","request_body_sha256":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},{"url":"https://www.ons.gov.uk/help/terms-conditions","method":"GET","sha256":"82bf962c635ba9b4cb291a7df40173ebbd3cdb021b45eb9718deb7cd77f1df45","byte_count":136285,"retrieved_at":"2026-11-12T23:21:54.357347+00:00","capture_sha256":"d399dd9f379e9e4c859b6914ca28b542546ba2b544ed2124639d75fde91f36e3","request_body_sha256":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},{"url":"https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/","method":"GET","sha256":"f5b2b9f2af63647cde889fa6c3508f5705925295b74912c68caa28dd37e64aa5","byte_count":10450,"retrieved_at":"2026-11-12T23:21:54.645004+00:00","capture_sha256":"83d4c7fbfacaf4e1c6553279001c0371080d6b0410da661ad2803b0d058a9ced","request_body_sha256":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"}],"processing_version":"macro-expansion-v1","generation":"1ade270a-4c6a-4247-9d0f-6a3cd93f2412","published_at":"2026-11-12T23:21:58.684923+00:00","coverage":{"latest":"2026-09-01","earliest":"1989-01-01","geographies":1,"observations":453},"freshness_policy":{"version":"reference-age-v1","reference":"period_end","window_days":100,"description":"Reference periods ending within 100 days of the screening date pass this conservative coverage screen. This is not a verified publication deadline or a guarantee of current source availability. Collection dates do not refresh an old reference period."},"comparability_policy":{"cross_geography_levels":false,"reason":"These reviewed definitions cover one country with its own national GDP or all-items CPI methods. Use that country’s native history; country overlays require a qualified comparable cohort."}},"count":1,"truncated":false,"data":[{"geo":"GBR","period":"2026-09","period_start":"2026-09-01","value":3.5,"complete_status":null,"source_attributes":{"source_cdid":"D7G7","_sotw_evidence":"7bc4d4b3e37222d95b49e849eca9b1b11da072956c2e7b2ca906fed2c16c0ada","source_dataset":"MM23","_sotw_definition":"1551977af5d7c82eac954fa597cae45c70b25ba8c53008918c05bcba0763b731","source_frequency":"M","source_value_text":"3.5","source_period_text":"2026 SEP","native_value_recomputed":false,"companion_html_agreement":true,"companion_agreement_scope":"same-publisher full CSV/table; no independent second-source claim","publisher_revision_status":null,"source_seasonal_adjustment":null,"actual_source_availability_at":null,"original_publisher_release_at":null,"source_edition_date_precision":"day","source_edition_publication_date":"2026-10-21","source_precision_decimal_places":1,"source_declared_next_release_date":"2026-11-18","source_declared_next_release_time":null,"publisher_revision_status_precision":"unknown"},"freshness":"within-window","age_days":44,"freshness_limit_days":100,"checked_at":"2026-11-13T00:44:02.536Z","reference_period_end":"2026-09-30","quality":"no-status-flag","raw_value":3.5}],"checked_at":"2026-11-13T00:44:02.536Z","notice":"Values keep source units and complete flags. Unreliable source readings have null value and retain raw_value. Freshness is a reference-age coverage screen, not a publisher deadline. Acquisition and dataset update times are distinct from original publication/vintage. Recorded-state reconstruction begins at the archive activation baseline and does not establish original publisher release availability."}