The timely artwork, titled 'Devolved Parliament', may become Banksy’s most expensive artwork, and is expected to sell for more than £1.5M, according to auctioneer Sotheby’s.
The Conservative former prime minister has recalled the day after the EU referendum in his memoir.
The portrait is said to articulate the cry of the nation for the Prime Minister and other politicians to listen to the concerns of the public.
The defector is set to launch a tirade against the state of his former party under Mr Corbyn’s leadership.
The Prime Minister repeated his vow to take the UK out of the bloc on October 31, despite legislation designed to prevent a non-deal exit.
More than six in 10 (62%) people in Scotland voted remain in the 2016 referendum.
She said she did not intend to cause offence.
“I will never forget that night. It was horrible. What sort of man does that and is then made a knight?
Cabinet minister Nicky Morgan has said she would vote to remain in the European Union - but she still insisted the public can’t have another referendum.