| Section 4 (deprivation of citizenship). | 1st April 2003 | |
| Section 12 (British citizenship: registration of certain persons without other citizenship). | 30th April 2003 | |
| Section 13 (British citizenship: registration of certain persons born between 1961and 1983). | 30th April 2003 | |
| Section 68 (1) to (5) (bail). | 1st April 2003 | |
| Section 72 (9) and (10) (serious criminal). | 1st April 2003 | |
| Section 77 (no removal while claim for asylum pending). | 1st April 2003 | |
| Section 78 (no removal while appeal pending). | 1st April 2003 | |
| Section 79 (deportation order: appeal). | 1st April 2003 | |
| Section 80 (removal of asylum-seeker to third country). | 1st April 2003 | So far as not already in force. |
| Section 81 (adjudicators). | 1st April 2003 | |
| Section 82 (right of appeal: general). | 1st April 2003 | |
| Section 83 (appeal: asylum claim). | 1st April 2003 | |
| Section 84 (grounds of appeal). | 1st April 2003 | |
| Section 85 (matters to be considered). | 1st April 2003 | |
| Section 86 (determination of appeal). | 1st April 2003 | |
| Section 87 (successful appeal: direction). | 1st April 2003 | |
| Section 88 (ineligibility). | 1st April 2003 | |
| Section 89 (visitor or student without entry clearance). | 1st April 2003 | |
| Section 90 (non-family visitor). | 1st April 2003 | |
| Section 91 (student). | 1st April 2003 | |
| Section 92 (appeal from within United Kingdom: general). | 1st April 2003 | |
| Section 93 (appeal from within United Kingdom: “third country” removal). | 1st April 2003 | |
| Section 94 (appeal from within United Kingdom: unfounded human rights or asylum claim). | 1st April 2003 | |
| Section 95 (appeal from outside United Kingdom: removal). | 1st April 2003 | |
| Section 96 (earlier right of appeal). | 1st April 2003 | |
| Section 97 (national security, &c.) | 1st April 2003 | |
| Section 98 (other grounds of public good). | 1st April 2003 | |
| Section 99 (sections 96 to 98: appeal in progress). | 1st April 2003 | |
| Section 100 (Immigration Appeal Tribunal). | 1st April 2003 | |
| Section 101 (appeal to Tribunal). | 1st April 2003 | |
| Section 102 (decision). | 1st April 2003 | |
| Section 103 (appeal from Tribunal). | 1st April 2003 | |
| Section 104 (pending appeal). | 1st April 2003 | |
| Section 105 (notice of immigration decision). | 1st April 2003 | |
| Section 106 (rules). | 1st April 2003 | |
| Section 107 (practice directions). | 1st April 2003 | |
| Section 108 (forged document: proceedings in private). | 1st April 2003 | |
| Section 109 (European Union and European Economic Area). | 1st April 2003 | |
| Section 110 (grants). | 1st April 2003 | |
| Section 111 (monitor of certification of claims as unfounded). | 1st April 2003 | |
| Section 114 (1) and (2) (repeal). | 1st April 2003 | |
| Section 116 (Special Immigration Appeals Commission: Community Legal Service). | 1st April 2003 | |
| Section 117 (Northern Ireland appeals: legal aid). | 1st April 2003 | |
| Section 118 (leave pending decision on variation application). | 1st April 2003 | |
| Section 120 (requirement to state additional grounds for application). | 1st April 2003 | |
| Section 123 (advice about work permit, &c.). | 1st June 2003 | |
| Section 126 (physical data: compulsory provision). | 1st April 2003 | |
| Section 130 (Inland Revenue). | 1st April 2003 | |
| Section 142 (Advisory Panel on Country Information). | 1st April 2003 | |
| Section 147(1), (3) and (4) (employment). | 1st April 2003 | |
| Section 147(2) (employment). | 1st April 2003 | For the purpose of enabling subordinate legislation to be made under it. |
| Schedule 4 (Immigration and Asylum Appeals: Adjudicators). | 1st April 2003 | |
| Schedule 5 (The Immigration Appeal Tribunal). | 1st April 2003 | |
| Schedule 6 (Immigration and Asylum Appeals: Transitional Provision). | 1st April 2003 | |
| Schedule 7 (Immigration and Asylum Appeals: Consequential Amendments). | 1st April 2003 | So far as not already in force. |
| Section 161 and Schedule 9 (repeals) (the entries relating to sections 3(9)(b), 29 and 31(d) of the Immigration Act 1971; to sections 19E(7) and 71A(1) of the Race Relations Act 1976f1; to sections 7 to 9, 10, 19 to 21, 22, 27(2), 28, 33, 44(2) and (3) of and Schedule 2 paragraph 3(1)(b) and Schedule 4 to the British Nationality Act 1981f2; to section 4(3)(b) of the British Nationality (Falkland Islands) Act 1983f3; to section 1(5) of the British Nationality (Hong Kong) Act 1990f4; to sections 2A, 4, 5(1)(a) and (b) and (2) and 7A of, and Schedule 2 to, the Special Immigration Appeals Commission Act 1997f5; to sections 15, and 56 to 81, of, and Schedules 2 to 4, and 14, to, the 1999 Act; and to Schedule 2 to the Race Relations Amendment Act 2000.f6 | 1st April 2003 | |