Prime Minister David Cameron threw his weight behind calls for the use of video technology in football, after Frank Lampard's goal in England's World Cup defeat by Germany was disallowed despite clearly crossing the line.

The PM said he was "very disappointed" to see England go out of the World Cup, after watching the 4-1 defeat with German Chancellor Angela Merkel - who also said that the Lampard goal should have been allowed to stand.

"I do think that the use of technology in sport can be a bonus," said the PM. "I'm a keen follower of cricket and tennis and I think the third umpire has been a great thing."