CA 11 July 1988. The appellants, a father and son, were each the owner of a house which had been for years uninhabited and in a state of deterioration ; the local authority resolved to make cpos under Housing Act 1957 Part V but informed the appellants that the orders could not be implemented if they took the necessary steps to bring the properties back into habitable occupation. The appellants applied to the High Court under Acquisition of Land Act 1981 s23 to have the orders quashed for invalidity but the application was dismissed. The appellants appealed, arguing that the orders were ultra vires and contending that they should have been made under Housing Act 1957 Part II which provided machinery for securing the repair of houses by those in control of them. This would have allowed the appellants to apply to the county court to settle any matters in dispute. CA rejected this argument. The local authority was entitled to use powers under Part V to bring properties below the statuto