Britain will ‘hunt down’ killers of aid worker

Britain stands ready to take "whatever steps are necessary" to help an international push to destroy the "evil" extremist group who murdered a British aid worker, David Cameron said.

The UK’s prime minister hailed David Haines as a “British hero” and vowed to “hunt down those responsible and bring them to justice no matter how long it takes” after Islamic State (IS) posted a video of the beheading of the father of two.

A second British hostage, named as Alan Henning, was also shown, with a threat that he would be the next to be killed.