453.Section 183 inserts new subsections into the Electricity Act 1989 and the Gas Act 1986 which allow GEMA, when entering information on the registers it is required to maintain under section 49 of the Electricity Act 1989 and section 36 of the Gas Act 1986, to exclude details in certain circumstances. GEMA can exclude such details as it considers appropriate to maintain the confidentiality of matters, relating either to an individual or a body of persons, where publication of those details might, in GEMA's opinion, seriously and prejudicially affect the individual or body of persons.