William Ewart Gladstone, John Maynard Keynes, David Lloyd George or John Stuart Mill: who was the greatest British Liberal? Journal readers voted in the summer to whittle down a long-list of fifteen to these final four. Now, in the final stage, leading politicians and historians make the case for each one, and Journal readers and conference participants will be able to vote for the final choice of the greatest Liberal. Paddy Ashdown speaks for Gladstone; Tom McNally for Keynes; Kenneth Morgan for Lloyd George; and Richard Reeves for John Stuart Mill. Chair: Martin Kettle, The Guardian.