{
  "url": "https://openlegislation.uk/immigration-and-asylum-act-1999/section-166",
  "json_url": "https://openlegislation.uk/immigration-and-asylum-act-1999/section-166.json",
  "legislation": "ukpga/1999/33",
  "legislation_title": "Immigration and Asylum Act 1999",
  "legislation_url": "https://openlegislation.uk/immigration-and-asylum-act-1999",
  "path": "section/166",
  "kind": "section",
  "number": "166",
  "heading": "Regulations and orders.",
  "text": "(1) Any power to make rules, regulations or orders conferred by this Act is exercisable by statutory instrument.\n(2) But subsection (1) does not apply in relation to orders made under section 90(1), rules made under paragraph 1 of Schedule 5 or immigration rules.\n(3) Any statutory instrument made as a result of subsection (1) may—\n(a) contain such incidental, supplemental, consequential and transitional provision as the person making it considers appropriate;\n(b) make different provision for different cases or descriptions of case; and\n(c) make different provision for different areas.\n(4) No order is to be made under—\n(a) section 20,\n(b) section 21,\n(c) section 31(10),\n(d) section 86(2),\n(da) section 86A(3),\n(e) section 96(5),\n(f) section 97(3),\n(g) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n(h) paragraph 4 of Schedule 5,\nunless a draft of the order has been laid before Parliament and approved by a resolution of each House.\n(5) No regulations are to be made under—\n(za) section 4(5),\n(a) section 9,\n(b) section 46(8);\n(c) section 53, ...\n(cza) section 82(4),\n(czb) section 92C(3)(a) or (8),\n(d) section 144, or\n(e) paragraph 9(1E) of Schedule 5,\nunless a draft of the regulations has been laid before Parliament and approved by a resolution of each House.\n(5A) No regulations under section 20A(12) which amend Schedule A1 so as to—\n(a) add a reference to a person or description of person, or\n(b) modify a reference to a person or description of person otherwise than in consequence of a change of name or transfer of functions,\nare to be made unless a draft of the regulations has been laid before Parliament and approved by a resolution of each House.\n(6) Any statutory instrument made under this Act, apart from one made—\n(a) under any of the provisions mentioned in subsection (4) or (5),\n(ab) under section 20A(12) and which falls within subsection (5A), or\n(b) under section 24(3) , 24A(3) or 170(4) or (7),\nshall be subject to annulment by a resolution of either House of Parliament.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in s. 166(2) inserted (1.10.2004) by Asylum and Immigration (Treatment of Claimants, etc.) Act 2004 (c. 19), ss. 41(5), 48(3); S.I. 2004/2523, art. 2, Sch."
    },
    {
      "type": "F",
      "label": "F2",
      "text": "S. 166(4)(da) inserted (1.4.2011) by Legal Services Act 2007 (c. 29), s. 211(2), Sch. 18 para. 16 (with ss. 29, 192, 193); S.I. 2011/720, art. 2(c)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "S. 166(4)(e) ceased to have effect (7.11.2002) and repealed (prosp.) by Nationality, Immigration and Asylum Act 2002 (c. 41), ss. 61(b), 161, 162(1)(2), Sch. 9 (with s. 159)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "S. 166(4)(g) omitted (1.7.2021) by virtue of Immigration Act 2014 (c. 22), s. 75(3), Sch. 9 para. 17(4); S.I. 2021/771, reg. 2(b)"
    },
    {
      "type": "F",
      "label": "F5",
      "text": "S. 166(5)(za) inserted (1.12.2004) by Asylum and Immigration (Treatment of Claimants, etc.) Act 2004 (c. 19), ss. 10(2), 48(3) (with s. 10(6)); S.I. 2004/2999, art. 2, Sch."
    },
    {
      "type": "F",
      "label": "F6",
      "text": "S. 166(5)(cza) inserted (2.12.2025 for specified purposes, 2.2.2026 in so far as not already in force) by Border Security, Asylum and Immigration Act 2025 (c. 31), s. 65(3)(f), Sch. 1 para. 3(1) (with Sch. 1 para. 3(2)); S.I. 2026/59, reg. 2(e)(i)"
    },
    {
      "type": "F",
      "label": "F7",
      "text": "S. 166(5)(czb) inserted (2.12.2025 for specified purposes) by Border Security, Asylum and Immigration Act 2025 (c. 31), s. 65(3)(f), Sch. 1 para. 10(1)"
    },
    {
      "type": "F",
      "label": "F8",
      "text": "S. 166(5)(e) and word inserted (2.12.2025 for specified purposes) by Border Security, Asylum and Immigration Act 2025 (c. 31), s. 65(3)(f), Sch. 1 para. 15(1)"
    },
    {
      "type": "F",
      "label": "F9",
      "text": "S. 166(5A) inserted (12.7.2016) by Immigration Act 2016 (c. 19), ss. 55(12)(a), 94(1); S.I. 2016/603, reg. 3(h)"
    },
    {
      "type": "F",
      "label": "F10",
      "text": "S. 166(6)(ab) inserted (12.7.2016) by Immigration Act 2016 (c. 19), ss. 55(12)(b), 94(1); S.I. 2016/603, reg. 3(h)"
    },
    {
      "type": "F",
      "label": "F11",
      "text": "Word in s. 166(6)(b) inserted (15.4.2005) by Civil Partnership Act 2004 (c. 33), s. 263(10)(b), Sch. 27 para. 163; S.I. 2005/1112, art. 2, Sch. 1"
    },
    {
      "type": "C",
      "label": "C1",
      "text": "S. 166 extended (Guernsey) (with modifications) (12.10.2011) by The Immigration (Guernsey) Order 2011 (S.I. 2011/2444), art. 5, Sch. 2"
    }
  ],
  "outstanding_effects": [
    {
      "type": "substituted for word in s. 166(5)(c)",
      "affecting": "ukpga/2016/19",
      "affecting_title": "Immigration Act 2016"
    },
    {
      "type": "omitted",
      "affecting": "ukpga/2016/19",
      "affecting_title": "Immigration Act 2016"
    },
    {
      "type": "inserted",
      "affecting": "ukpga/2016/19",
      "affecting_title": "Immigration Act 2016"
    },
    {
      "type": "substituted for word in s. 166(6)(a)",
      "affecting": "ukpga/2016/19",
      "affecting_title": "Immigration Act 2016"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukpga/1999/33/section/166",
    "retrieved_at": "2026-10-29T09:21:34.566084+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."
}