Green Party Leader Caroline Lucas MP has just confirmed to address the Compass National Conference A New Hope on Saturday 12 June in London. With over half the places already booked please register now to take part in the biggest and most radical post election debate in the country.

With Labour starting the process of finding a new leader in Opposition we believe an alliance that is genuinely progressive has to be built. This means listening, working and learning from progressives both inside and outside the Labour movement.

Caroline ran and won on a programme of greater democracy, equality and of course sustainability. Let's find out, now she is in Parliament, how she proposes to push this common agenda.

This is why we've invited Caroline to speak: to help us forge new progressive alliances, develop fresh thinking, to listen to, learn from and be challenged by those with different perspectives and help us to forge a truly new politics.

Other high-profile speakers at the event who'll also join us to debate the ideas, campaigns and coalitions needed to build a new progressive consensus for the 21st century include: Jon Cruddas MP; Chuka Umunna MP; Baroness Helena Kennedy QC; Polly Toynbee, The Guardian; John Harris, The Guardian; Prof Ruth Lister CBE; Will Straw, Left Foot Forward; John Hilary, War On Want; Seumas Milne, The Guardian; Mehdi Hasan, New Statesman; Fiona Millar; Kat Banyard, UK Feminista; Louise Christian; Hilary Wainwright, Red Pepper; Noel Hatch, Compass Youth; Sam Tarry, Young Labour; Ceri Goddard, Fawcett Society; Andrew Simms, nef; Tony Robinson, actor & broadcaster; Clifford Singer, mydavidcameron.com; Pam Giddy, POWER 2010; Jonathan Rutherford, Soundings; Prof David Blanchflower and Paul Mason, author & broadcaster. We'll be announcing further high-profile speakers in the coming days.

But if we are to build A New Hope for British politics, we urgently need you to confirm your attendance too! So register now.

Held in association with the New Statesman, The Guardian and FES this will be the biggest gathering of progressives held after an historic general election.

So come along on Saturday 12 June to the Compass conference and working together let's forge A New Hope for the future!