Notwithstanding the repeal by this Act of subsection (4) of section 58 of the M1Police Act 1964 (provision made by regulations for chief constables affected by amalgamations or reorganisations not to be less favourable than that under the M2Police Pensions Act 1976), that subsection shall continue to have effect in relation to any person who was the chief constable of a police force on 1st July 1964 and became a member of another police force by virtue of that section.