Demand for the HS2 high-speed rail project has "likely been overestimated", according to a report by a think-tank.
Evidence HS2 will promote economic growth or tackle the north-south divide is "limited", the report - from the New Economics Foundation - claims.
HS2 will reduce the average journey time from central Leeds to London from 2 hours 20 minutes to 1 hour 28 minutes.
The report adds the line will be "carbon intensive and environmentally damaging".
In January 2012 the construction of phase 1 between London and Birmingham was approved. Construction is set to begin in 2017 with an indicated opening date of 2026.
More top news
Calendar weather update with Jon Mitchell
We've had some cracking sunsets recently. LINDA LOCKWOOD from Riddlesden has asked JON MITCHELL why sunsets are red. Here he explains why.
Some of the UK's biggest police forces have recorded a rise in the number of violent homophobic crimes this year.