Regulation 1(2)(a): amended, on 1 April 2008 (effective for 2008–09 income year and later), by section ZA 2(1) of the Income Tax Act 2007 (2007 No 97).
Regulation 1(2)(a): amended, on 1 April 2005 (effective for 2005–06 tax year and later), by section YA 2 of the Income Tax Act 2004 (2004 No 35).