ANTI-HS2 campaigners are demanding the publication of a new Parliamentary report giving the high-speed rail project its second-worst possible rating.

The Major Projects Authority awarded HS2 an amber-red rating – one above ‘unachievable’. The government has said the full report will not be made available until a Hybrid bill is published in 2013.

According to the authority, the rating means: “Successful delivery of the project is in doubt, with major risks or issues apparent in a number of key areas. Urgent action is needed to ensure these are addressed, and whether resolution is feasible.”

John McDonnell, Labour MP for Hayes and Harlington, has told campaigners the withholding of the document is ‘unacceptable’, while Uxbridge and South Ruislip MP John Randall said he would be asking the government directly whether it could be published sooner.

Stop HS2 campaign coordinator Joe Rukin said: “The Major Projects Authority are saying that HS2 is that broke, they aren’t sure if it can be fixed, but no one is going to see why until after the Hybrid bill has gone to Parliament.

“How can it be that a report designed to look into the viability of spending billions of pounds can be a state secret? If it hadn’t been for MP Margaret Hodge asking the question at the Public Accounts Committee, would anyone know about this report?”