21.This Schedule has effect where an initial notice under Part 2 of the Building Act 1984 is in force in relation to building work (whether such building work forms the whole or part of the work so specified) to which this Measure applies. Whilst the notice is in place the function of enforcing the Measure conferred on a local authority is not exercisable in relation to the building work and the Measure is to be enforced by an approved inspector.