The Relevant Population (England) Regulations 1990
Section 69 of the Local Government Finance Act 1988 (“the 1988 Act”) requires precepting authorities to secure that such of their expenses as are to be met by precepts are borne by the appropriate charging authority to whose area or part of whose area the expenses relate, or by all such charging authorities (if more than one), in proportion. The proportions are to be determined by reference to the relevant populations of such areas or parts of such areas to which the expenses relate.