High Quality Content by WIKIPEDIA articles! Chris Ryan`s Strike Back is a six-part British television series based on the novel of the same name written by best-selling author and former soldier of the Special Air Service, Chris Ryan. It was produced by Left Bank Pictures for Sky1. The cast of Strike Back is led by Richard Armitage and Andrew Lincoln, also starring Orla Brady, Shelley Conn, Colin Salmon and Jodhi May, including a variety of guest appearances including Toby Stephens, Ewen Bremner, Dhaffer L`Abidine, Shaun Parkes and Alexander Siddig. The series follows John Porter (Armitage), a former British Special Forces soldier, who is drafted back into service by Section 20 of the Secret Intelligence Service (MI6).