James McAhren (born 19 March 1984) is a British professional wrestler, best known under the ring name Jimmy Havoc. He is known for his work with Progress Wrestling, Defiant Wrestling, Insane Championship Wrestling (ICW), Major League Wrestling (MLW) and All Elite Wrestling (AEW). Between the five promotions Havoc is a former and longest reigning Progress World Champion and was one-half of the Defiant Tag Team Champions alongside Primate, and Mark Haskins. He was also one-half of the Progress Tag Team Champions with Haskins. He was also the longest reigning Defiant Wrestling Hardcore Champion and a former IPW:UK World Champion.