{
  "generated_at": "2026-08-27T18:41:54+01:00",
  "about": "How official UK immigration figures have been restated between statistical releases. Derived from this site's own version history: every release regenerates the published figures, so a change to the same measure for the same reference period is a restatement by the publisher.",
  "method": "Only same-measure, same-reference-period changes count. A new reference period (the latest complete year moving from 2024 to 2025, say) is a new figure, not a revision. Each movement is classified before publication: only publisher restatements appear below. Movements caused by corrections to this site's own extraction are excluded, because presenting them as official revisions would be false, and unclassified movements are withheld by default.",
  "tracked_since": "2026-03-30",
  "source": "Home Office Immigration System Statistics; Home Office Asy_D11",
  "revision_count": 5,
  "withheld_count": 4,
  "revisions": [
    {
      "measure": "Voluntary returns",
      "reference_period": "2025",
      "previous": 29459,
      "current": 29814,
      "change": 355,
      "change_pct": 1.21,
      "revised_on": "2026-08-27",
      "release": "Home Office Immigration System Statistics, year ending June 2026",
      "commit": "f3cd572",
      "kind": "publisher_revision",
      "note": "Home Office Immigration System Statistics, year ending June 2026. Calendar 2025 remains provisional and firmed in this release.",
      "source": "Home Office Immigration System Statistics (api-kpi.json)"
    },
    {
      "measure": "Total returns (enforced + voluntary)",
      "reference_period": "2025",
      "previous": 39371,
      "current": 39722,
      "change": 351,
      "change_pct": 0.89,
      "revised_on": "2026-08-27",
      "release": "Home Office Immigration System Statistics, year ending June 2026",
      "commit": "f3cd572",
      "kind": "publisher_revision",
      "note": "Home Office Immigration System Statistics, year ending June 2026. Calendar 2025 remains provisional and firmed in this release.",
      "source": "Home Office Immigration System Statistics (api-kpi.json)"
    },
    {
      "measure": "Port refusals (separate series)",
      "reference_period": "2025",
      "previous": 18308,
      "current": 18356,
      "change": 48,
      "change_pct": 0.26,
      "revised_on": "2026-08-27",
      "release": "Home Office Immigration System Statistics, year ending June 2026",
      "commit": "f3cd572",
      "kind": "publisher_revision",
      "note": "Home Office Immigration System Statistics, year ending June 2026. Calendar 2025 remains provisional and firmed in this release.",
      "source": "Home Office Immigration System Statistics (api-kpi.json)"
    },
    {
      "measure": "Foreign national offender returns",
      "reference_period": "2025",
      "previous": 5683,
      "current": 5732,
      "change": 49,
      "change_pct": 0.86,
      "revised_on": "2026-08-27",
      "release": "Home Office Immigration System Statistics, year ending June 2026",
      "commit": "f3cd572",
      "kind": "publisher_revision",
      "note": "Home Office Immigration System Statistics, year ending June 2026. Calendar 2025 remains provisional and firmed in this release.",
      "source": "Home Office Immigration System Statistics (api-kpi.json)"
    },
    {
      "measure": "Enforced returns",
      "reference_period": "2025",
      "previous": 9912,
      "current": 9908,
      "change": -4,
      "change_pct": -0.04,
      "revised_on": "2026-08-27",
      "release": "Home Office Immigration System Statistics, year ending June 2026",
      "commit": "f3cd572",
      "kind": "publisher_revision",
      "note": "Home Office Immigration System Statistics, year ending June 2026. Calendar 2025 remains provisional and firmed in this release.",
      "source": "Home Office Immigration System Statistics (api-kpi.json)"
    }
  ]
}