| AWA | Anglian Water Authority, 1802-1979 |
| BRR | British Rail, 1854-1970s |
| DB | Drainage Boards, 1556-1978 |
| EAW | East Anglian Water Authority, 1702-1966 |
| ECO | Norfolk Estuary Company, 1837-1967 |
| EE | Eastern Electricity, 1896-1963 |
| EG | Eastern Gas, 1844-1949 |
| KLD | King’s Lynn Docks and Railway Company, 1869-1924 |
Updated: 27 July 2006.