The letter, written to the Daily Telegraph, accuses the Government of “ploughing on regardless” of “overwhelming" opposition, and suggest that the consultation process lacks legitimacy.
According to the Daily Telegraph, around 137 Conservative MPs are expected to vote against the changes based on letters written to their constituents.
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The five living former US presidents appeared together for the first time since 2013 to raise money for hurricane victims.
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Ministers are also looking at schemes such as “lock-in agreements” to reduce the 250,000 sales that fall through annually.