Transitional provision: information etc. comprising the controlled reservoirs register

4.  Until section 13 of the Act (structures or areas which become controlled reservoirs after the relevant date) has effect for all purposes, section 9(2) of the Act does not have effect in so far as information or a document referred to in section 9(2) relates to a controlled reservoir to which section 13 applies but which is not a 1975 Act reservoir.