Public Libraries and Museums Act 1964

3 Where, immediately before the time at which library officers of any description are transferred by the operation of this Act from one local authority to another, it was the prevailing practice of the first-mentioned authority, in relation to officers of that description, to exercise beneficially (that is to say, so as to secure the making by the authority of payments or of increased payments) any discretionary power exercisable by it by virtue of any pensions provisions, it shall be the duty of the other authority, in relation to those officers, to exercise that power (or any corresponding power under the pensions provisions for the time being in force) in a way which is not less beneficial than that practice ; and section 35 of the Local Government Superannuation Act 1937 shall apply to any question arising under this paragraph.