Newsnight's Jeremy Paxman presses Mayor of London Boris Johnson about his proposals to change the law governing strikes to make it harder for workers to take industrial action.

Boris Johnson wants the government to introduce legislation preventing action unless at least 50% of union members in a workplace take part in a ballot.

Watch Jeremy Paxman's interview with Boris Johnson in full on Newsnight on Monday 4 October 2010 at 10.30pm on BBC Two and afterwards on the Newsnight website.