Newsnight

Most of the snap polls following the UK's first ever TV prime ministerial debate scored Nick Clegg as the winner on the night. So what could this mean for the electoral landscape? Michael Crick is in Bristol Northwest for us tonight. We are also speaking to Ed Balls live from Leeds. And our science editor Susan Watts is bringing the latest on the volcanic eruption in the southwestern part of Iceland's Eyjafjallajoekull glacier, that has released a significant volume of ash into the air. Flights across the UK are to remain grounded for a second day as the volcanic ash drifts across Europe.