{
  "meta": {
    "build_timestamp": "2026-05-18T11:10:30+00:00",
    "dataset": "build_manifest",
    "generated_by": "pipeline/build.py",
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      "working_tree": "dirty"
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    "schema_note": "A provenance record of one pipeline build. steps lists each script run, in order, with its timing. outputs gives a SHA-256 checksum, byte size, record count and source provenance for every processed JSON file. build_timestamp changes each run, so the manifest is not byte-identical between builds; the processed outputs themselves are deterministic and reproduce byte-for-byte.",
    "schema_version": "1.0.0"
  },
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          "url": "https://www.gov.uk/government/statistics/youth-justice-statistics-2024-to-2025"
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        {
          "description": "ONS lookup table for UK Authority Codes 2024 (FOI-2024-2008)",
          "publication_date": "2024-05-20",
          "reference_period": "2024 local authority and police force geography",
          "retrieval_date": "2026-05-17",
          "url": "https://www.ons.gov.uk/aboutus/transparencyandgovernance/freedomofinformationfoi/lookuptableforukauthoritycodes2024"
        }
      ]
    },
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        {
          "description": "YJB Youth Justice Statistics 2024 to 2025, remand and outcomes tables",
          "publication_date": "2026-01-29",
          "reference_period": "year ending March 2025",
          "retrieval_date": "2026-05-16",
          "url": "https://www.gov.uk/government/statistics/youth-justice-statistics-2024-to-2025"
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      ]
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      "file": "data/processed/populations.json",
      "generated_by": "pipeline/ingest_ons.py",
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      "sources": [
        {
          "description": "ONS Census 2021, dataset RM032, ethnic group by sex by age, via the ONS filter service",
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          "retrieval_date": "2026-05-17",
          "url": "https://www.ons.gov.uk/datasets/RM032"
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    {
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      "file": "data/processed/ethnicity_crosswalk.json",
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      "schema_version": "1.0.0",
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        {
          "description": "ONS Census 2021 and DfE school census ethnicity classifications, rolled up to the YJB five groups",
          "publication_date": null,
          "reference_period": "classification crosswalk, not a dated dataset",
          "retrieval_date": "2026-05-17",
          "url": ""
        }
      ]
    },
    {
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      "file": "data/processed/context_indicators.json",
      "generated_by": "pipeline/ingest_dfe.py, pipeline/ingest_home_office.py and pipeline/ingest_imd.py",
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      "sources": [
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          "url": "https://explore-education-statistics.service.gov.uk/find-statistics/suspensions-and-permanent-exclusions-in-england"
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        {
          "description": "DfE Children looked after in England including adoptions",
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          "retrieval_date": "2026-05-17",
          "url": "https://explore-education-statistics.service.gov.uk/find-statistics/children-looked-after-in-england-including-adoptions"
        },
        {
          "description": "StatsWales, Welsh Government, permanent and fixed-term exclusions from schools",
          "publication_date": "2025-11-01",
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          "retrieval_date": "2026-05-17",
          "url": "https://www.gov.wales/permanent-and-fixed-term-exclusions-schools"
        },
        {
          "description": "StatsWales, Children looked after on 31 March by ethnicity",
          "publication_date": "2026-01-30",
          "reference_period": "year ending 31 March 2024",
          "retrieval_date": "2026-05-17",
          "url": "https://www.gov.wales/children-looked-after-local-authorities"
        },
        {
          "description": "Home Office Police powers and procedures, stop and search open data tables",
          "publication_date": "2025-11-06",
          "reference_period": "year ending 31 March 2025",
          "retrieval_date": "2026-05-17",
          "url": "https://www.gov.uk/government/statistics/stop-and-search-arrests-and-mental-health-detentions-march-2025"
        },
        {
          "description": "Home Office Police powers and procedures, arrests open data tables",
          "publication_date": "2025-11-06",
          "reference_period": "year ending 31 March 2025",
          "retrieval_date": "2026-05-17",
          "url": "https://www.gov.uk/government/statistics/stop-and-search-arrests-and-mental-health-detentions-march-2025"
        },
        {
          "description": "MHCLG English Indices of Deprivation 2025, IDACI supplementary index",
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          "reference_period": "income data financial year 2022/23",
          "retrieval_date": "2026-05-17",
          "url": "https://www.gov.uk/government/statistics/english-indices-of-deprivation-2025"
        },
        {
          "description": "Welsh Index of Multiple Deprivation 2019, income deprivation for children indicator",
          "publication_date": "2019-11-27",
          "reference_period": "income data financial year 2016/17",
          "retrieval_date": "2026-05-17",
          "url": "https://www.gov.wales/welsh-index-multiple-deprivation-2025"
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          "description": "MoJ Statistics on Ethnicity and the Criminal Justice System 2024",
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          "retrieval_date": "2026-05-17",
          "url": "https://www.gov.uk/government/statistics/ethnicity-and-the-criminal-justice-system-2024"
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        {
          "description": "YJB Youth Justice Statistics 2024 to 2025, sentencing and remand tables",
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          "retrieval_date": "2026-05-16",
          "url": "https://www.gov.uk/government/statistics/youth-justice-statistics-2024-to-2025"
        },
        {
          "description": "Home Office Police powers and procedures, stop and search and arrests open data",
          "publication_date": "2025-11-06",
          "reference_period": "year ending 31 March 2025",
          "retrieval_date": "2026-05-17",
          "url": "https://www.gov.uk/government/statistics/stop-and-search-arrests-and-mental-health-detentions-march-2025"
        }
      ]
    },
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          "description": "PRISM-R disclosure control audit, every suppression decision across the count-bearing outputs, generated by the build",
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          "reference_period": "applies to the outputs of this build",
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          "url": ""
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}