http://www.legislation.gov.uk/ukpga/2015/5/section/4/enactedNational Insurance Contributions Act 2015enKing's Printer of Acts of Parliament2018-04-05 4 1 Part 1 of Schedule 2 applies Part 4 of FA 2014 (follower notices and accelerated payments) to Class 1, 1A, 1B and certain Class 2 contributions. 2 Part 2 of that Schedule applies Part 5 of that Act (promoters of tax avoidance schemes) to Class 1, 1A, 1B and certain Class 2 contributions. 3 Part 3 of that Schedule applies Parts 4 and 5 of that Act to Class 4 contributions. 4 Part 4 of that Schedule contains commencement and transitory provision.