A report from MPs has reignited the debate about the government's proposal to build a high speed rail network in Britain.
The Commons' transport committee found that the High Speed Two proposals could be a "catalyst" for growth in the economy.
But opponents to the proposals said the report was "scathing" by highlighting the concerns MPs have over the project.
Under the plans the high speed network will run north from London to Birmingham before dividing, running up to Manchester in the north-west and Leeds in the north-east.
Unusually, the government is being supported by the opposition. Labour ministers made the initial proposals during the last parliament.