GREENS want a “People’s Convention” to rewrite Britain’s constitution, including restricting the Queen to a purely ceremonial role, leader Natalie Bennett said yesterday.

Britain should follow the example of Sweden, which removed all political powers from the royal family in 1975, Ms Bennett suggested.

But she said that the Greens’ priority for constitutional reform was proportional elections for Parliament as the first-past-the-post system would be a “certain loser” after polling day this Thursday.

Ms Bennett told Sky News’s Murnaghan show: “In the Green Party, we believe that the hereditary principle should have no place in our constitution.

“We want to have an elected House of Lords as well as proportional representation in both the lower house and the upper house.”

In response to being asked about financial support the state would continue to give the Mountbatten-Windsors, Ms Bennett said: “We would have to look at that at the time.”