As a student of 20th century history, I'm rereading Martin Gilbert's great biography of Winston Churchill. As Gilbert chronicles the life of Churchill, he recalls the discomfort Churchill caused his Tory friends when he joined the Liberal Party in 1904. Churchill, a man of principle, left the Conservative Party because of its apostasy on trade. The Conservatives turned protectionist early in the 20th Century, and Churchill crossed over to the Liberal Party. The vitriol it provoked was of legendary proportions.
Churchill was a well-known maverick. He was a pugnacious and provocative speaker who challenged many of the icons of British Parliament and certainly made a number of enemies in and out of his party.