Angela Smith, Labour's leader in the House of Lords, has abandoned her support for Jeremy Corbyn because she said he had not been involved in key campaigns yet had claimed credit for them.

Lady Smith said "he wasn't part of the core team doing the hard work" yet Mr Corbyn had taken out full-page newspaper adverts claiming "I'd sooner by fighting the Tories", citing a victory in forcing the Government into a U-turn on tax credit cuts in the hope of winning the Labour leadership contest.

The peer has backed Owen Smith, the rival leadership candidate.