Sky has released two new promotional images for the fourth series of Strike Back.

The new ten-part series will air on Sky1 this summer, with Robson Green (Soldier Soldier) joining the cast as Lt Colonel Philip Locke, a commanding officer in chief, alongside Martin Clunes (Doc Martin) as Sebastian Gray, a former MI6 agent turned independent intelligence officer working in Beirut, and Dougray Scott (Mission Impossible II) as James Leatherby, a wealthy rogue operative and self-styled war junkie.

Philip Winchester and Sullivan Stapleton will return as counterterrorism operatives Sgt. Michael Stonebridge and Sgt. Damien Scott.

Are you looking forward to Series 4? Let us know below…

> Buy Series 3 on DVD on Amazon.

Watch the Strike Back: Shadow Warfare trailer…