Grant Gillespie is an English novelist, screenwriter and actor who lives in Central London.

As an actor, his credits include: Television - Will (TNT), Catastrophe, Siblings, the Channel 4 mocumentary Cast Offs, Hollyoaks, Holby City, Eastenders, Doctors, Casualty, Poirot Midsomer Murders; Film - Kingsman - The Golden Circle, Florence Foster Jenkins, Lecture 21.

His debut novel, The Cuckoo Boy, was published by London publishing house To Hell with Publishing in May 2010.