The trend for brand extension continues with a new spin-off for BBC One’s hit spy drama Spooks to transmit on BBC Three.

Set in 2013 when London has been evacuated following a nuclear bomb and the country’s power base has shifted north, Spooks: Code features six young new recruits. They’re tough and moral but are they clever enough to protect Britain’s future…?

With Thames House gone MI5 must completely restructure and establish field offices across the UK, working to gather intelligence from the very heart of local communities. They need young, new officers on the ground, and fast.

Luckily, Britain’s youth is more than up to the challenge and is fighting back from the attack with a new sense of patriotism, combined with the hedonism that comes from being face to face with their own mortality. It is members of this new generation of patriots who help make up MI5’s new Field Office 19.

“After the bomb, MI5 needed new officers with ability, dedication and potential on the streets as soon as possible,” explains producer Chris Fry.

“The team rallied to this call and joined MI5 in the weeks following the bomb. With the exception of their team leader, none of them have been in the field for more than four months and they will continually find themselves in situations beyond their experience and training � they’ll only succeed through grit and determination.”

The new team, mathematician Charlie (Liam Boyle, Drop Dead Gorgeous), ex-police officer Rachel (Ruta Gedmintas, The Tudors) and former criminal Jez (Heshima Thompson, Prime Suspect: The Final Act), Vik (Christopher Simpson, Brick Lane), former junior doctor Rob (Andrew Knott, The History Boys) and psychology student Kylie (Georgia Moffett, Doctor Who) are led by experienced spook Hannah (Joanne Froggatt, Life On Mars).

Explaining the show’s starting point Executive Producer Karen Wilson says: “Nearly one year on from the bomb, Britain is starting to get back to something resembling normality. But, under the surface, there have been massive changes: terror warnings and security checkpoints are regular features of everyday life, and there’s a flourishing black market in everything from ID cards to anti-radiation drugs.

“This is the world of Spooks: Code 9 and it holds a whole new set of dangers for MI5’s young pretenders.”

Jane Tranter, Controller of BBC Fiction, says: “It’s brilliant to have the chance of looking into the future of Spooks with Spooks: Code 9 on BBC Three.

“The series promises to be as entertaining and action-packed as Spooks on BBC One has always been, whilst bringing a more maverick, younger perspective.”

Danny Cohen, Controller of BBC Three, comments: “I’m hugely looking forward to seeing this new drama on BBC Three. I’m a big fan of Spooks and believe that this new show will bring a dynamic cast of young actors to BBC audiences.

The show be accompanied by an online extension produced by Kudos and leading alternate reality game studio Six to Start and will include a live alternate reality experience that provides a multi-dimensional setting for the show and allows viewers to explore and contribute to this changed world.

Currently filming in Bradford Spooks: Code 9 is set to air later this year.