The Green party leadership have called upon Labour, the Lib Dems and Plaid Cymru to work together to challenge the Tories at the next election. In an open letter, the Green leaders stress the exceptional circumstances occassioned by the vote to leave the EU:

“In a spirit of openness and transparency, we are writing to you as leaders of parties which oppose Brexit, to invite you to a cross-party meeting to explore how we best rise to the challenge posed by last week’s vote to Leave the EU. “We have a UK Government in chaos, an economy facing a crisis and people up and down the country facing serious hardship. There is an urgent need to make a stand against any austerity and the slashing of environmental legislation, human and workers’ rights, that may come with Brexit. “With the growing likelihood of an early General Election, the importance of progressive parties working together to prevent the formation of a Tory-UKIP-DUP government that would seek to enact an ultra-right Brexit scenario is ever more pressing.”

Caroline Lucas shot down a rumour that she would be joining Corbyn’s shadow cabinet. But her party has decided to call for a progressive alliance and an early general election.

Key to such cross-party talks would be the demand for electoral reform, as the leader Natalie Bennett added in a statement:

“Central to such a progressive alliance would be a commitment to proportional elections for the House of Commons and an elected second chamber.”

The call for a more plural politics follows a post-referendum surge in Green party membership, with up to 50 people joining per hour.

Here’s the letter in full:

Open letter to: Jeremy Corbyn, Tim Farron, Leanne Wood on behalf of Green Party of England and Wales,