Alvis plc was created in 1981.
Alvis Firebird was created in 1935.
Vickers Engineering was acquired by Rolls-Royce plc. Rolls-Royce sold the defense part of the company to Alvis plc which became Alvis Vickers. The Vickers company had initially been founded in 1828.
Sears plc was created in 1891.
Siebe plc was created in 1819.
Persimmon plc was created in 1972.
NTR plc was created in 1991.
Hays plc was created in 1867.
Fresnillo plc was created in 2008.
Aon plc was created in 1919.
Whatman plc was created in 1740.
MEPC plc was created in 1946.
Rotala PLC was created in 2005.