Details of failings were revealed in a statement to the House of Commons this afternoon, as critics branded the project a 'national embarrassment and 'white elephant'.

Labour is set to announce a new timeline on HS2 and efforts to save money after years of delays and spiralling costs

Heidi Alexander will tell the Commons that delivering the beleaguered high-speed rail project may cost triple the £32.7billion price tag it was originally given in 2011.