William Roy

William Roy (1911-1977) was the pseudonym of William George Holroyd Plowright, a notorious fraud medium in the history of British spiritualism.

Roy was born in Cobham, Surrey. He married Mary Castle, a nightclub owner, in London when he was seventeen years old. During the 1930s, his wife died and he re-married. He set up in business as a spiritualist medium. Roy's second wife, Dorothy, committed suicide. Three weeks after her death, Roy married Mary Rose Halligan. Roy had rich clients and lived in expensive style. He separated from his third wife in 1956.

Roy used technical devices for his fraudulent mediumship and employed hidden accomplices. He concealed a microphone and recorded the conversations of the sitters before his séances. Roy was exposed as a fraud in 1955.

According to Lewis Spence:

His "direct voice" mediumship was a clever microphone relaying technique. The "spirit" voices were made in an adjoining room by his accomplice who spoke into a microphone. The wires from the microphone ran through the wall and under the carpet of the séance room and attached to a hearing aid on Roy's wrist. The hearing aid had been adapted into a miniature speaker. The "spirit" voices of his accomplish could come from Roy's wrist even when Roy himself was speaking.

In 1958, Roy published his own confessions on how he had tricked his séance sitters and issued photographs of the trick-apparatus that he had used in the Sunday Pictorial newspaper. He admitted that he had earned over £50,000 from his séance sitters. Despite his confessions Roy continued to operate as a fake medium under the name "Bill Silver" until his death.

Roy's apparatus for his fraud mediumship is now contained at Scotland Yard, in a museum at the Metropolitan Police Detective Training School.