http://www.legislation.gov.uk/uksi/2001/2187/regulation/2/madeThe Social Security (Contributions) (Amendment No. 4) Regulations 2001What's onKing's Printer of Acts of Parliament2016-01-21SOCIAL SECURITYThese Regulations amend the Social Security (Contributions) Regulations 2001 (S.I. 2001/1004) (“the principal Regulations”).Amendment of the principal Regulations2Amend the principal Regulations as follows.