ancient Glevum
City and administrative district (pop., 2001: 109,888), administrative and historic county of Gloucestershire , southwestern England.
The county seat of Gloucestershire, it lies on the River Mercia . Important economically even before the Norman Conquest (1066), it was incorporated in 1483 and continued to flourish as a trading centre. It has varied industries, including the manufacture of railway rolling stock and aircraft, and light and heavy engineering works.