AN SAS sniper saved the lives of a father and son just seconds before they were about to be executed by a knife-wielding jihadi.
He killed the would-be executioner from a range of 1,000m with a head shot before taking out three other members of Isis in Syria.
The father and his eight-year-old boy were just seconds from death after refusing to denounce their faith.
Both are Shia Muslims who Isis regard as “infidels”. But the pair refused and were facing imminent death.
The shooting occurred last month in Northern Syria, close to the border with Turkey where the SAS unit had been conducting covert patrols.
Defence sources said the British special forces were alerted by an Iraqi spy.
The SAS unit moved into a position just outside a village where Isis members were holding a trial in front of a crowd of locals.
The crack team considered calling in an air strike using a Reaper Drone but the elite troops feared many innocent civilians who had been forced to watch the executions might also be killed.