The Thames Water Authority (Cotswold and Swindon) (Extension of Operation of Byelaws) Order 1978
泰晤士河水务局（科茨沃尔德和斯温顿）（延长条例的有效期）令1978

The Thames Water Authority (Thames Valley) (Extension of Operation of Byelaws) Order 1974
泰晤士河水务局（泰晤士河流域）（延长条例的实施）1974年令

The Thames Water Authority (Thames Valley and Metropolitan District) (Extension of Operation of Byelaws) Order 1978
泰晤士河水务局（泰晤士河流域和大都市区）（延长条例的实施）令1978

The Thames Water Authority (Thames Valley and Metropolitan District) (Extension of Operation of Byelaws) Order 1975
泰晤士河水务局（泰晤士河流域和大都市区）（延长条例的实施）令1975年

The Thames Water Authority (Swindon) (Extension of Operation of Byelaws) Order 1974
1974年泰晤士河水务局（斯温顿）（延长条例的实施）令

The Thames Water Authority (Epsom and Ewell) (Extension of Operation of Byelaws) Order 1976
泰晤士河水务局（Epsom and Ewell）（延长条例的实施）1976年命令

The Thames Water Authority (Metropolitan District) (Extension of Operation of Byelaws) Order 1974
泰晤士河水务局（大都市区）（延长条例的实施）1974年令

The Thames Water Authority (Oxfordshire and District) (Extension of Operation of Byelaws) Order 1979
1979年泰晤士河水务局（牛津郡和地区）（延长条例的实施）令

The Thames Water Authority (Epsom and Ewell) (Extension of Operation of Byelaws) Order 1975
泰晤士河水务局（Epsom and Ewell）（延长条例的实施）令1975