Sturgeon - little known across much of the UK outside Scotland - more than holding own in heavyweight company. Debate has worked for her.
Tom Watson told Corbyn - resign, you have "no authority with the parliamentary party".
Corbyn has changed the terms of trade at #PMQs! Cam has dropped the Punch and Judy - he's playing the longer game. PMQs round 1 to Corbyn.
Bennett nods approval at Sturgeon who seems anointed unofficial leader of anti austerity alliance. Another good night for SNP leader.