{
  "url": "https://openlegislation.uk/european-union-withdrawal-act-2018/section-21",
  "json_url": "https://openlegislation.uk/european-union-withdrawal-act-2018/section-21.json",
  "legislation": "ukpga/2018/16",
  "legislation_title": "European Union (Withdrawal) Act 2018",
  "legislation_url": "https://openlegislation.uk/european-union-withdrawal-act-2018",
  "path": "section/21",
  "kind": "section",
  "number": "21",
  "heading": "Index of defined expressions",
  "text": "(1) In this Act, the expressions listed in the left-hand column have the meaning given by, or are to be interpreted in accordance with, the provisions listed in the right-hand column.\nExpression\nProvision\nAnything which continues to be domestic law by virtue of section 1B(2)\nSection 20(5A)\nAnything which continues to be domestic law by virtue of section 2\nSection 20(6)\n. . .\n. . .\nArticle (in relation to the Treaty on European Union or the Treaty on the Functioning of the European Union)\nSection 20(10)\nAssimilated case law\nSection 6(7)\nAssimilated direct legislation\nSection 20(1)\nAssimilated direct minor legislation\nSection 20(1)\nAssimilated direct principal legislation\nSection 20(1)\nAssimilated domestic case law\nSection 6(7)\nAssimilated EU case law\nSection 6(7)\nAssimilated law\nSection 6(7)\nCharter of Fundamental Rights\nSection 20(1)\nCommons sitting day\nSection 20(1)\nDevolved authority\nSection 20(1)\nDirect EU legislation\nSection 3(2)\nDomestic law\nSection 20(1)\nThe EEA\nSection 20(1)\nEEA agreement\nSchedule 1 to the Interpretation Act 1978\nEEA EFTA separation agreement\nSection 7B(6)\nEnactment\nSection 20(1)\nThe EU\nSchedule 1 to the Interpretation Act 1978\nEU decision\nSection 20(1)\nEU-derived domestic legislation\nSection 1B(7)\nEU directive\nSection 20(1)\nEU entity\nSection 20(1)\nEU institution\nSchedule 1 to the Interpretation Act 1978\nEU instrument\nSchedule 1 to the Interpretation Act 1978\nEuratom Treaty\nSchedule 1 to the Interpretation Act 1978\nEU reference\nSection 20(1)\nEU regulation\nSection 20(1)\nEuropean Communities Act 1972\nSection 1A(7)(a)\nEuropean Court\nSchedule 1 to the Interpretation Act 1978\nEU tertiary legislation\nSection 20(1)\nEU Treaties\nSchedule 1 to the Interpretation Act 1978\nExempt EU instrument\nSection 20(1)\nExit day (and related expressions)\nSection 20(1) to (5)\nFormer Article 34(2)(c) of Treaty on European Union\nSection 20(9)\nFuture relationship agreement\nSection 20(1)\nImplementation period\nSection 1A(6)\nIP completion day (and related expressions)\nSection 1A(6)\nJoint Committee\nSection 20(1)\nLords sitting day\nSection 20(1)\nMember State\nSection 20(1) and Schedule 1 to the Interpretation Act 1978\nMinister of the Crown\nSection 20(1)\nModify (and related expressions)\nSection 20(1)\nNorthern Ireland devolved authority\nSection 20(1)\nOperative (in relation to direct EU legislation)\nSection 3(3)\nPart (of withdrawal agreement or EEA EFTA separation agreement)\nSection 1A(7)(b)\nPrimary legislation\nSection 20(1)\nPublic authority\nSection 20(1)\nPublic authority in the United Kingdom (however expressed)\nSection 20(8)\nQualifying Northern Ireland goods\nSection 8C(6)\nRatify\nSection 20(1)\nRelevant criminal offence\nSection 20(1) (and paragraph 44 of Schedule 8)\nRelevant separation agreement law\nSection 7C(3)\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\n. . .\nRetrospective provision\nSection 20(1)\nSubordinate legislation\nSection 20(1)\nSwiss citizens' rights agreement\nSection 7B(6)\nTribunal\nSection 20(1)\nWales\nSection 20(1)\nWelsh zone\nSection 20(1)\nWithdrawal agreement\nSection 1A(6)\n(2) See paragraph 22 of Schedule 8 for amendments made by this Act to Schedule 1 to the Interpretation Act 1978.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(a) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in s. 21(1) Table omitted (1.1.2024) by virtue of The Retained EU Law (Revocation and Reform) Act 2023 (Consequential Amendment) Regulations 2023 (S.I. 2023/1424), reg. 1(2), Sch. para. 89(5)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Words in s. 21(1) Table inserted (1.1.2024) by Retained EU Law (Revocation and Reform) Act 2023 (c. 28), s. 22(3), Sch. 2 para. 8(10)(a) (with s. 22(6)); S.I. 2023/1363, reg. 3(e)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(b) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F5",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(c) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F6",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(d) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F7",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(e) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F8",
      "text": "Words in s. 21(1) inserted (31.12.2020) by European Union (Future Relationship) Act 2020 (c. 29), s. 40(7), Sch. 6 para. 7; S.I. 2020/1662, reg. 2(ff)"
    },
    {
      "type": "F",
      "label": "F9",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(f) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F10",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(g) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F11",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(h) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F12",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(i) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F13",
      "text": "Words in s. 21(1) Table omitted (1.1.2024) by virtue of Retained EU Law (Revocation and Reform) Act 2023 (c. 28), s. 22(3), Sch. 2 para. 8(10)(b) (with s. 22(6)); S.I. 2023/1363, reg. 3(e)"
    },
    {
      "type": "F",
      "label": "F14",
      "text": "Words in s. 21(1) Table omitted (1.1.2024) by virtue of Retained EU Law (Revocation and Reform) Act 2023 (c. 28), ss. 4(5), 22(3) (with s. 22(5)); S.I. 2023/1363, reg. 3(b)"
    },
    {
      "type": "F",
      "label": "F15",
      "text": "Words in s. 21(1) inserted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(j) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    },
    {
      "type": "F",
      "label": "F16",
      "text": "Words in s. 21(1) substituted (31.1.2020) by European Union (Withdrawal Agreement) Act 2020 (c. 1), s. 42(7), Sch. 5 para. 45(k) (with s. 38(3), Sch. 5 para. 66); S.I. 2020/75, reg. 4(n)(xviii)"
    }
  ],
  "outstanding_effects": [
    {
      "type": "words inserted",
      "affecting": "ukpga/2023/28",
      "affecting_title": "Retained EU Law (Revocation and Reform) Act 2023"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukpga/2018/16/section/21",
    "retrieved_at": "2026-10-29T09:04:51.422677+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}