determination workmeans work in connection with the determination of payments in pursuance of any functions conferred on a defined authority by or under the Social Security Contributions and Benefits Act 1992 or the Social Security Administration Act 1992;
the Actmeans the Local Government Act 1988;
the costmeans the estimated total annual cost including overheads provided that those overheads are not treated by a defined authority as forming part of the cost of— (a) another defined activity;
the specified proportionmeans an amount equal to the product of the following formula— where an amount equal to the total of the cost to a defined authority of the specified work and of determination work;
voluntary competitive tenderingmeans the awarding of work before 1st April 1994 following a competitive process in the course of which at least three persons other than defined authorities were invited to tender for that work.