6U.K.In Schedule 18 to FA 1998 (company tax returns, assessments and related matters), in paragraph 8 (calculation of tax payable), in subsection (1), for “section 19, 20 or 21 of the Corporation Tax Act 2010 (marginal relief for companies with small profits)” substitute “ Chapter 3A of Part 8 of the Corporation Tax Act 2010 (marginal relief for companies with small ring fence profits etc) ”.