Ed Miliband MP, Leader of the Labour Party, said:

“The killing by ISIL of another hostage and the threat of more violence demonstrates again their murderous barbarism.

“Their cold-blooded brutality against the innocent offends the values of people throughout the world, wherever they live.

“This shows, as we have recently have said, that they are a threat which cannot be ignored.

“Our thoughts are with the families of the victims.”