Southwell (sŭħˈəl, southˈəl) [key], town (1991 pop. 61,200), Nottinghamshire, central England. It includes the small civil parish of Southwell, which since 1884 has been the cathedral town of Nottinghamshire. Charles I surrendered to the Scottish commissioners at the King's Arms (now Saracen's Head) Inn in 1646. The cathedral, begun c.1110, is on the site of a church said to have been founded in the 7th cent.