Calls for a progressive alliance are coming from several quarters. Today, a Green House alert included news that the case for cross-party working and why it could be a game-changer will be examined on 2-4 September at the University of Birmingham (Edgbaston campus).

This discussion will be included in the Green Party’s Autumn Conference and Caroline Lucas, Green MP for Brighton Pavilion, will be joined on the panel by Labour MP Lisa Nandy, former Liberal Democrat parliamentary candidate Chris Bowers, Neil Lawson, Chair of Compass, and Rupert Read, Chair of the Green House think-tank.

The panel, to be held at 18.30 on 2 September and chaired by leading Guardian journalist Zoe Williams, will open with contributions from panel members followed by an opportunity for members and supporters to share their thoughts on potential progressive alliances.

The panel will launch a new book entitled The Alternative, which has been co-edited by three of the panellists. It will also launch the Green House report, The Green Case For A Progressive Pact, written before the EU referendum.