Iain Watson presents The Long March of Corbyn’s Labour on Monday 25th June, 8pm on BBC Radio 4.
With more than half a million members, Labour is now on the march, but where is it headed? Iain Watson explores the changing nature of Britain's official opposition, as it may be transforming itself from a conventional political party into a mass movement. And leading the way are those who have gone in a short time from the margins to the mainstream.