Shadow defence secretary Jim Murphy responds to the news that six British servicemen are believed to have died yesterday in Afghanistan:

"This is a terrible tragedy which will bring profound loss to six families and real hurt to the whole country.

"The professionalism of UK service personnel is unmatched and their bravery is unending.

"This tragedy underlines the daily dangers our Forces face and the importance of their role in stabilising a nation that can never again become an incubator for terrorism.

"In our sadness it is still important to remember that this painful mission is in our country’s national interest."