From
The BBC» The UK▸ 's rail franchise model is "bust" and should be reviewed, former Network Rail chief Sir John Armitt has said.
Rail operators take "very significant revenue risk" which has "got them into trouble", he told the BBC.
This is because the government "will always go for the most optimistic forecast of revenue".
His comments came as the National Infrastructure Commission (NIC), which Sir John chairs, issued a report into the UK's infrastructure requirements.
The NIC's report, which gives independent advice to government, looked at a wide range of infrastructure needs, including road, energy supply and broadband.
It said the UK should not agree to back more than one new nuclear plant after Hinkley Point C is built, because renewable energy represents the best value for consumers.
Report (160 pages) downloadable via
https://www.nic.org.uk/publications/national-infrastructure-assessment-2018/