9U.K.Subject to paragraphs 10 and 11, this Part has effect in relation to accounting periods beginning on or after 1 April 2011.
10U.K.Paragraph 7(3) and (4)(a) have effect in relation to accounting periods beginning on or after 1 April 2012 (but do not have effect in relation to relevant periods which begin before, and end on or after, 1 April 2012).
11U.K.Paragraph 7(5) has effect where the accounting period mentioned in section 268A(1)(a) of CTA 2009 begins on or after 1 April 2010.