The Transport Secretary, Patrick McLoughlin, is expected to defend HS2 rail link plans, highlighting the economic benefits at a speech in London today.
A Public Accounts Committee report on Monday said the Department for Transport had yet to present a convincing case for the project.
New analysis by KPMG shows that HS2 could boost the country's economy by £15bn per year and that the regions will be the biggest winners from the project.
The report, commissioned by HS2 Ltd, the company developing the new high speed rail link, also gives a breakdown of the economic benefits for each HS2 city region.
HS2 is expected to give the Birmingham city region economy a yearly boost equivalent to 2.1-4.2% of the city region's GDP.
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It will be largely cloudy through the evening and overnight in the west, with further spells of light rain or drizzle.
It will be cloudy this evening with occasional outbreaks of light rain at times before becoming drier later tonight.
Photos from the scene of a disturbance involving a group of men in Leicester after which a sixteen year old boy died.