HS2 rail benefits to economy 'unclear', says National Audit Office

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The benefits of the HS2 high speed rail project on the economy are unclear, the National Audit Office (NAO) has warned.

The NAO said in a report that it had "reservations" about how the London-to-Birmingham link would deliver growth, adding that the project had an estimated £3.3bn funding gap.

But Transport Secretary Patrick McLoughlin said the NAO's conclusions were based on old data.

Richard Westcott reports.

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