He added that he was already using his power to "ensure Jeremy Corbyn never gets the keys to 10 Downing Street".
Two days after Mr Geller wrote the letter, reports emerged suggesting the cabinet was on the brink of ousting the Prime Minister, leading to jokes that the spoon-bender was indeed directing her fate.
Declan Lawn, a screenwriter, wrote on Twitter: “I think we all need to be very careful about annoying Uri Geller in future. Just let him have what he wants, his power is terrifying.”
Another Twitter user, Mike Tomlinson, wrote: “I wish Uri Geller had hatched his plan a couple of years ago.”
The Israeli psychic warned Mrs May he could take a "drastic course of action” to stop Brexit unless she changed course.
He said that his power had been "validated" by the CIA, MI5 and Mossad.