The Transport Secretary Patrick McLoughlin is expected in Manchester to address people's concerns over the HS2 high-speed rail link.
Earlier this week, the Supreme Court ruled the Government wasn't cutting corners to get the controversial project through Parliament.
Supporters of the proposed scheme say it'll reduce journey times between the north west and London and create jobs. But there are concerns about the effect the new line may have on the environment.
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Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."
Business Secretary Greg Clark said talks with Peugeot's boss over a potential Vauxhall takeover were both "constructive and reassuring".
He served in Margaret Thatcher's Cabinet as Home Secretary in 1989 and was also a former Governor of Bermuda.