Cameron on MH17 crash: 'It is a horrific incident'
Prime Minister David Cameron has said his thoughts are with "families who have lost their loved ones" in the Malaysia Airlines jet crash.
He said "those who were responsible must be held to account".
The plane, carrying 298 people, crashed in rebel-held territory in eastern Ukraine on Thursday. Latest figures released by Malaysia Airlines show the plane was carrying at least 173 Dutch nationals, 27 Australians, 44 Malaysians (including 15 crew), 12 Indonesians and nine Britons.