The hacking and leaking of documents from the US Democratic National Committee last year was just one of a number of "dirty tricks" carried out by Vladimir Putin's government, Boris Johnson has said, revealing for the first time that British officials share the assessment by American intelligence agencies that the Kremlin was behind the incident.

Speaking in the House of Commons, Mr Johnson said it was "pretty clear" Moscow was behind the hacking and that the Kremlin "is up to all sorts of very dirty tricks, such as cyber-warfare."

The Foreign Secretary made the comments as he briefed the House about a meeting with senior advisers to Donald Trump on the weekend.