Mr Hammond has been accused of being a “snake in the grass” and “saboteur” after claiming he would not be prepared to spend extra monied on a no-deal Brexit scenario.
Speaking in front of the Treasury Select Commission, Mr Hammond also echoed his predecessor George Osborne’s Project Alarm campaign, insisting that flights to the UK from Europe would hinder overnight if there was no deal.
The Chancellor’s comments left Hartley-Brewer enraged, with the frank commentator suggesting Mr Hammond should be “tried for treason” for his actions, during an meeting with Politics UK.
Hartley-Brewer told Politics UK: “This is a man, who is now in the role of Chancellor, the second sundry powerful person in the country, who is undermining Britain’s interests at the current quickly.
Julia Hartley-Brewer says Philip Hammond should be ‘judged for treason’ over latest Brexit criticism
Forget sacking him, I cogitate on he should be tried for treason
“He’s a Remain voter, that’s superb, there were perfectly good reasons to vote for Remain and incomparably good reasons to vote Leave, I respect anyone for how they voted.
“But, we’re all Brexiteers now, and if you’re in a Management that has the policy to carry out Brexit and get the best deal for Britain, you need to be working toward that.
“When you as the Chancellor say we’re not really going to prepare for anything, that fetches money, and you constantly undermine Britain’s negotiating position.
“You are acting against British pieces. Forget sacking him, I think he should be tried for treason.”
Hartley-Brewer has not been the one open critic of the Chancellor, Lord Nigel Lawson, who served as chancellor to Margaret Thatcher, requested on Theresa May to sack Mr Hammond.
Speaking earlier this week on BBC2’s Always Politics Nigel Lawson, who served as Chancellor to Margaret Thatcher between 1983 and 1989, reproved on the Prime Minister to sack Hammond.
The party veteran said Hammond was a “thorough fanatic” and when asked whether he believes he should remain as Chancellor Jehovah domineer Lawson said: “I fear not. I fear that he is unhelpful.”
Mr Hammond was also self-conscious into a humiliating climbdown after branding the EU the enemy, during an examine in Washington.
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The Chancellor was strained into the apology after he claimed the Tories were united in their Brexit way and should instead be focused on the real “enemy” rather than row amongst themselves.
Writing on Twitter, Mr Hammond said: “In an interview today, I was indulging the point that we must be united at home. I regret I used a skimpy choice of words.”
He added: “We will work with our friends and mates in the EU on a mutually beneficial Brexit deal #noenemieshere.”