David Cameron with mobile phone
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Security review as PM answers phone to hoax caller

Security at Downing Street is being reviewed after a drunk hoax caller managed to get through to Prime Minister David Cameron.

The hoaxer called Cameron's mobile phone and claimed to be the head of the intelligence agency, GCHQ. David Cameron said the call did not "breach security".

The hoaxer also managed to speak to the director of GCHQ, Robert Hannigan claiming to be a journalist.

Ross Hawkins reports.

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