A video purporting to show UK hostage Alan Henning being beheaded has been released by Islamic State militants.
The Salford taxi driver was delivering aid to Syria in December when he was kidnapped and then held hostage by IS.
IS threatened to kill him in footage last month showing the death of Briton David Haines, and in this video they threaten US aid worker Peter Kassig. David Cameron said Britain would do all it could “to hunt down these murderers and bring them to justice”.
The prime minister said the killing of father-of-two Mr Henning, 47, showed “how barbaric and repulsive” IS was. Volunteer Mr Henning was on his fourth aid mission to Syria when he was captured within minutes of arriving in the country last December.