Who said witches do not exist...
http://timelines.ws/20thcent/1944.HTML
1944 Jan 19, In England Helen Duncan (1896-1956), a Scottish spiritualist in Portsmouth, was arrested for informing an audience of the sinking of two British warships long before the news was officially made public. She was found guilty of witchcraft and jailed for nine months. When re-elected in 1951, Churchill repealed the 1735 witchcraft act but Duncan's conviction was never quashed. In 2007 her granddaughter launched a fresh campaign to gain a posthumous pardon for Britain's last convicted witch.
BBC - History - Scottish History