There have been calls for the treason laws to be used against an Islamic group protesting about British troops in Afghanistan. Such laws are widely regarded as out of date, so can any citizen now challenge the state with impunity? Chris Bowlby asks if treason still matters in modern Britain. Interviewees include: Charles Falconer, Former Lord Chancellor Kristen Eichensehr, Yale Law school Michael Lobban, Historian Anjem Choudary, Former leader of Islam4UK Kieran McEvoy, Professor of law at Queen’s University in Belfast Edward Garnier, Shadow attorney general