http://www.legislation.gov.uk/uksi/1982/326/madeThe Severn Bridge (Amendment) Regulations 1982enHIGHWAYS, ENGLAND AND WALESKing's Printer of Acts of Parliament2023-11-22https://www.legislation.gov.uk/projects/controllers-library#item_412031 The Severn Bridge (Amendment) Regulations 1982RegulationsThe Severn Bridge Regulations 1993reg. 2reg. 4reg. 1