The Matrimonial Causes Act 1973 (c.18) The Matrimonial Causes Act 1973 (c.18) England, Wales and Scotland Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: Sch. 3 para. 11(17) repealed by Child Maintenance and Other Payments Act 2008 Sch. 8 3Paragraph 3 The Matrimonial Causes Act 1973 (c.18)