Schedule 1 Reform of Class 2 contributions SSCBA 1992 SSCB(NI)A 1992 SSAA 1992 SSC(TF)A 1999 Social Security Contributions (Transfer of Functions, etc) (Northern Ireland) Order 1999 (S.I. 1999/671) Social Security (Contributions) Regulations 2001 (S.I. 2001/1004) Commencement ← Section 9 Schedule 1 Paragraph 1 →