"What’s your favourite 007 film?”

It may not be one of the most hard-hitting questions the head of MI5 will ever have to answer, but for the first time the security service will take part in a live Q&A answering some of the nation’s probing questions. 

Ken McCallum, the director general of MI5, who took up the post in April last year, will join an Instagram Live session on Wednesday afternoon to field questions from an audience in a bid to attract social media users to the intelligence services.

On Tuesday night members of the public were invited to send questions to MI5’s Instagram Story before the session takes place, with MI5 suggesting inquiries such as: "What’s it like to work at MI5? What’s the difference between MI5 and MI6? What’s your favourite Bond movie? If you could ask the Director General of MI5 one thing – what would it be?"

The security service added: “Check back [on Wednesday] where Ken will be ready and waiting to answer some of your questions!”

The live Q&A on Instagram is expected to include queries about 007, played by actors such as Sean Connery, pictured with Rowan Atkinson in Never Say Never Again

Credit: Alamy

Richard Moore, the chief of MI6, tweeted that it was "a fantastic initiative" and "a national security first", as he urged his followers to submit questions for Mr McCallum.

Mr Moore, who took up the role last year, is known for his affection of social media.

In October last year, Mr Moore, who is the first member of the British secret service to use Twitter, told his ever-growing online following that he would "try to persuade some of you to come and work for MI6".

After his first official day as ‘C’ he tweeted: "Feel immensely privileged to lead such talented and committed public servants who work tirelessly to secure our interests and values abroad and keep us safe at home.

"There are limits to what I can say on Twitter ‘OurSuccessesMustRemainSecret’."