The Commonwealth of Britain Bill was introduced by Tony Benn, who was then a Labour MP in the House of Commons, first in 1991. It proposed abolishing the British monarchy, with the United Kingdom becoming a 'democratic, federal and secular commonwealth', in effect, a republic with a written constitution. It has been read in Parliament a number of times since, but has never achieved a second reading. Under the bill:
The constitutional status of the Crown would be ended;