http://www.legislation.gov.uk/ukpga/2015/30/schedule/4/paragraph/5/enactedModern Slavery Act 2015enKing's Printer of Acts of Parliament2015-03-31Modern Slavery Act 2015s. 50A(5A)Illegal Migration Act 2023s. 28(1)s. 55(9)s. 68(1)SCHEDULESSCHEDULE 4Offences to which defence in section 45 does not apply5Common law offencesPerverting the course of justice.