Following a period of consultation and subject to the approval of the Secretary of State for Communities and Local Government, the combined authority is formally created, dissolved or altered by a statutory instrument.
Nigerian Television Authority | Tennessee Valley Authority | Port Authority of New York and New Jersey | Palestinian National Authority | Metropolitan Atlanta Rapid Transit Authority | Massachusetts Bay Transportation Authority | Coalition Provisional Authority | Nordic combined | New York City Housing Authority | Financial Industry Regulatory Authority | Port Authority Trans-Hudson | Financial Services Authority | Land Transport Authority | Chicago Transit Authority | Qatar Investment Authority | State Transport Authority | Internet Assigned Numbers Authority | European Food Safety Authority | Advertising Standards Authority | Steel Authority of India | State Transport Authority (South Australia) | National Highways Authority of India | National Crime Authority | Independent Television Authority | Combined Military Services Museum | Airports Authority of India | Telecom Regulatory Authority of India | Roads and Traffic Authority | Oklahoma Educational Television Authority | New York City Transit Authority |