He has performed in more than 20 countries including his native United Kingdom and the United States in venues from local taverns to the London Palladium on December 20, 2002 at the annual International Magic Convention in London, England.
Best known for his use of suggestion and the use and apparent use of covert forms of psychological influence, his trademark routines are an apparently self-induced cessation of his pulse, followed by an apparent stop of a random audience member's pulse, and The Chair Prediction, a routine in which Jermay predicts which chair a spectator will choose to sit in.
Jermay has written a total of 33 books and manuscripts on magic and magic theory, many of which are limited-release, but 4 of which have been published by magic companies and mass-circulated. Those are 7 Deceptions, Building Blocks, Coral Fang, and "3510" .
Jermay, along with Marcus Monroe and Ben Seidman was a founding member of The Optical Delusions, a 2008 touring show that billed itself as "an evening of new-school variety."
He also served as consultant for the television series The Mentalist which started in 2008
More recently he has consulted for Dynamo, a UK based magician from Bradford.