Tory donor threatens to cut funding if Rishi Sunak becomes next PM 

Tory donor Lord Cruddas has threatened to cut off the party's funding in protest at 's betrayal of .

The City financier, who has given almost £4million to the , warned the former chancellor was 'not fit for high office'.

Lord Cruddas has shared a series of posts on social media describing Mr Sunak as a 'rat', 'a treacherous snake', a 'little weasel', a 'backstabber' and 'Fishy Rishi'. Other insults include the leader of a 'coup' who 'must be removed'.

Lord Cruddas has called Mr Sunak a 'backstabber' and says he will not give the Conservatives a planned £500,000 unless the membership is able to vote on whether Boris Johnson should remain as Prime Minister

Lord Cruddas grew up on a council estate and made his fortune setting up a major online trading firm

One such post included a caricature of Mr Sunak with the words: 'The hand that wields the knife shall never wear the crown.'

Lord Cruddas told : 'I planned to donate a total of £500,000 this year but that is on hold and will not be paid unless the membership have a chance to vote on Boris being PM.

'I have no interest in Rishi, who I deem to be not fit for high office due to his plotting and the orchestrated way he and others resigned to remove the PM.'

Lord Cruddas, who was handed a peerage by Mr Johnson last year, made his fortune setting up online trading firm CMC Markets.

He grew up on a council estate in east London and left school aged 15 with no qualifications.