Head and lower arms: Crosshair (Night Force)
Torso and upper arms: Shipwreck (SpyTroops)
Crotch and legs: Agent Faces (SpyTroops)
Hat: Gung Ho (SpyTroops)
Backpack: Accessory pack
Gun: Gung Ho (JvC)

Never had a Big Ben figure before, but loved the idea of an exchange trooper from the British elite SAS. This parts combo, with a little paint, felt appropriately British to me.