Compass is pleased to declare further speakers for its much anticipated event at Central Hall Westminster in London on Saturday 9 June. Speakers now include:

London Mayor Ken Livingstone; UNISON's Dave Prentis; Deputy Leadership challenger Jon Cruddas MP; Compass Chair Neal Lawson; the TUC's Frances O'Grady; Compass Parliamentary Chair Jon Trickett MP; chair of POWER Baroness Helena Kennedy; Northern Ireland Secretary Peter Hain MP; Centre for Global Governance's David Held; Constitutional Affairs Minister Harriet Harman MP; Liberty's Shami Chakrabarti; Action Aid's Collins Magalasi; Dawn Butler MP; The Guardian's John Harris; the Fabian Society's Louise Bamfield and Tim Horton; Emily Thornberry MP; UNISON's Keith Sonnet; Murad Qureshi AM of the London Assembly; Claire Fox from the Institute of Ideas; Compass's Miranda Grell; BBC Newsnight's Paul Mason; Helen Goodman MP; POWER's Pam Giddy; Red Pepper's Hilary Wainwright; The Times' David Aaronovitch; Sukhvinder Stubbs of the Barrow Cadbury Trust; Mark Seddon diplomatic correspondent at Al Jazeera; Tony Benn; leadership challenger John McDonnell MP; IPPR's Nick Pearce; the Citizenship Foundation's Tony Breslin; CND's Kate Hudson; Demos's Catherine Fieschi; Angela Eagle MP; Gemma Tumelty of NUS; writer Sue Palmer; the United Nation's Antonio Miranda; Colin Burgon MP; CER's Katinka Barysch; Prospect's David Goodhart; Roger Liddle of the European Commission; the DTI's Vicky Pryce; TUC's Owen Tudor; Derek Draper from the Campaign for Therapy; Citizen Organising Foundation's Neil Jameson; London Citizen's Catherine Howarth; UNISON's Deborah Littman; Julie Camacho from the Latin American Worker's Association; Ahmad Amir Ali of the Muslim Association of Britain.

We now have a number of distinguished international speakers joining us to discuss the progressive challenge in shaping our global world from all across the planet, including: Brazil; Germany; USA; Venezuela; France and South Africa - with many more domestic and international heavy-weight politicians, campaigners and commentators still to be confirmed as attending.

Over 40 organisations are running sessions: POWER, UNISON; Unlock Democracy; Barrow Cadbury Trust; Foreign Policy Centre; CRE; TULO; Friends of the Earth; SERA; Demos; nef (new economics foundation); Searchlight; War on Want; Citizenship Foundation; Liberty; CND; Red Pepper; NUS; Action Aid; Young Foundation; New Statesman; Unions 21; NLGN; Tribune; Centre for European Reform; Venezuela Information Centre; Renewal; Public World; The Fabian Society; Campaign for Therapy; The Fawcett Society; IPPR; T&G; NUT; CORE; Compass Youth; Labour Left Briefing; Citizen Organising Foundation; London Citizens; African Foundation for Development; LabOUR Commission; The Co-Operative Party.

This is the biggest one-day policy debate of its kind in the UK, with particular significance given the current climate of political change and renewal.

Due to potential security arrangements on the day we cannot confirm that we'll be able to take bookings on the day of the event, for this reason we urge you to book your ticket sooner rather than later - tickets cost from just £22 (further speaker announcements and availability for booking on the day will be made in due course).

A PDF booking form is attached if you've not received one in the post. Booking forms are also available in this week's New Statesman (out last Friday); Tribune (out this Friday) and next month's Red Pepper magazine and LLB. You can book and pay for your ticket online at http://www.compassonline.org.uk/conference/register.asp.

This is a major opportunity for you to debate new ideas to tackle the global challenges we face in the 21st century: from climate change to the inequality gap; from democratic deficits and the role of Parliament to the challenge of carbon free living; from how we reform our public services to a new foreign policy; from immigration to the role of Europe, these are all things that will be debated at the Compass conference.

We want you to join us in these important debates about how progressives shape our global world.

Held in association with UNISON; The Guardian and New Statesman we urge you to join us in shaping our global world this summer.

PLEASE CIRCULATE THIS EMAIL AMONGST FRIENDS AND COLLEAGUES WHO MAYBE INTERESTED IN ATTENDING