Pt. 1 Ch. 2: power to transfer functions conferred (25.2.1999) by Social Security Contributions (Transfer of Functions, etc.) Act 1999 (c. 2), ss. 17, 28(2)(c) (with Sch. 8)

Pt. 1 Ch. 2: power to apply and exclude conferred (1.4.1999) by Social Security Contributions (Transfer of Functions, etc.) Act 1999 (c. 2), ss. 23(1), 28(3) (with Sch. 8); S.I. 1999/527, art. 2(b), Sch. 2 (with arts. 3-6)

Pt. 1 Ch. 2 applied (with modifications) by Pension Schemes Act 1993 (c. 48), s. 171(2)(3) (as substituted (5.7.1999) by Social Security Contributions (Transfer of Functions, etc.) Act 1999 (c. 2), s. 28(3), Sch. 7 para. 19(3) (with Sch. 8); S.I. 1999/1662, art 2(b), Sch. Pt. 2 (with art. 4))

Pt. 1 Ch. 2 modified (1.9.1999) by The Child Benefit (Northern Ireland Reciprocal Arrangements) Amendment Regulations 1999 (S.I. 1999/2225), regs. 1(1), 2(2), Sch.

Pt. 1 Ch. 2 modified (1.9.1999) by The Social Security (Northern Ireland Reciprocal Arrangements) Amendment Regulations 1999 (S.I. 1999/2227), regs. 1(1), 2(2), Sch.

Pt. 1 Ch. 2 modified (5.10.1999) by Tax Credits Act 1999 (c. 10), s. 20(2), Sch. 2 para. 21 (with s. 19)

Pt. 1 Ch. 2 power to apply (with modifications) conferred (11.11.1999) by Welfare Reform and Pensions Act 1999 (c. 30), ss. 52(4)(6)(g), 89(4)(a)

Pt. 1 Ch. 2 modified by Social Security Administration Act 1992 (c. 5), s. 2B(1)(3)-(8) (as inserted (11.11.1999) by Welfare Reform and Pensions Act 1999 (c. 30), ss. 57, 89(4)(a))

Pt. 1 Ch. 2: power to apply conferred (8.7.2002) by Tax Credits Act 2002 (c. 21), ss. 61, 63(8)(a)

Pt. 1 Ch. 2 functions transferred (26.2.2003 for specified purposes, 1.4.2003 for specified purposes, 7.4.2003 in so far as not already in force) by Tax Credits Act 2002 (c. 21), ss. 50(2)(e), s. 61, Sch. 4 para. 15; S.I. 2003/392, art. 2

Pt. 1 Ch. 2 applied (8.7.2004) by Age-Related Payments Act 2004 (c. 10), s. 5(5)

Pt. 1 Ch. 2 applied (1.9.2005) by The Age-Related Payments Regulations 2005 (S.I. 2005/1983), regs. 1(1), 7(6)

Pt. 1 Ch. 2 modified (21.7.2008 for specified purposes, 1.1.2009 in so far as not already in force) by Health and Social Care Act 2008 (c. 14), ss. 132(8), 170; S.I. 2008/3137, art. 2

Pt. 1 Ch. 2 applied (with modifications) (1.10.2010) by The Employment and Support Allowance (Transitional Provisions, Housing Benefit and Council Tax Benefit) (Existing Awards) (No. 2) Regulations 2010 (S.I. 2010/1907), regs. 1(2), 16(2)(b), Sch. 2 para. 5

Pt. 1 Ch. 2 power to apply (with modifications) conferred (14.11.2016 for specified purposes, 21.4.2017 in so far as not already in force) by Childcare Payments Act 2014 (c. 28), ss. 59(4)(a), 75(2); S.I. 2016/1083, reg. 2(g); S.I. 2017/578, reg. 3(e)

Pt. 1 Ch. 2 modified (6.4.2016) by The Social Security (Northern Ireland Reciprocal Arrangements) Regulations 2016 (S.I. 2016/287), regs. 1, 2(2)(d), Sch. (as varied (27.11.2016 for specified purposes, 6.4.2017 in so far as not already in force) in accordance with S.I. 2016/1050, regs. 1(2), 2(2), Sch.)

Pt. 1 Ch. 2 modified (24.7.2020) by The Universal Credit (Northern Ireland Reciprocal Arrangements) Regulations 2020 (S.I. 2020/677), regs. 1, 2, Sch.

Pt. 1 Ch. 2 modified (coming into force in accordance with art. 1 of the amending S.I.) by The Social Security (Switzerland) (Citizens' Rights Agreement) Order 2019 (S.I. 2019/1303), art. 2; 2020 c. 1, Sch. 5 para. 1(1)

Pt. 1 Ch. 2 modified (1.1.2021) by The Social Security (Norway) Order 2020 (S.I. 2020/1597), arts. 1, 2(1)(2), Sch. (with art. 2(3))

Pt. 1 Ch. 2 modified (coming into force in accordance with art. 1 of the amending S.I.) by The Social Security (Switzerland) Order 2021 (S.I. 2021/1088), art. 2(1)-(3), Sch.

Pt. 1 Ch. 2 modified (coming into force in accordance with art. 1(3) of the amending S.I.) by The Social Security (Iceland) (Liechtenstein) (Norway) Order 2023 (S.I. 2023/1060), art. 2, Sch.