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.
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A very windy spell Saturday evening, and remaining gusty into Sunday. Colder air by the end of the weekend - sunshine & wintry showers.
Clouding up. Rain moving east after dark. Very windy tonight.
The Government scheme would benefit those aged under 40 but will only run for five years.