Speculation has been growing over the future of the high speed rail line HS2 after the government did not guarantee that the line will run from the Midlands to the North West.
The BBC’s analysis editor Ros Atkins has taken a look back at the delays, spiralling costs and cuts that have affected HS2 since it was first proposed in 2009.
Produced by Michael Cox, Katrina McCafferty and Catherine Karelli
