xmlns:atom="http://www.w3.org/2005/Atom" xmlns:atom="http://www.w3.org/2005/Atom"
28Sections 167 to 171 do not apply if —
(a)the expenditure was incurred before 21st March 2000; or
(b)the expenditure is treated as incurred by virtue of section 13 and the conditions mentioned in subsection (1) of that section were fulfilled before that date.