His trial at Carlisle Crown Court heard that one of his victims complained to police about him persistently harassing her in 2008, three years before his arrest.
During that time he continued his pattern of behaviour in what the prosecution described as a "cold, clinical exploitation of the desperate and vulnerable".
His mode of operation was to target girls and women who he thought would rather have sex for money than risk jail by stealing to feed addictions to drugs or drink.
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The chancellor now faces the prospect of forming a minority government or calling for a snap election.
The 73-year-old said a return is unlikely "given the politicised atmosphere that seems to have afflicted our set."
Chancellor Philip Hammond said the UK will make a financial proposal to the EU in the next three-and-a-half weeks.