Line of Duty season 6 police acronyms: what is an OCG? And what about a CHIS?

Posted by
Kayleigh Dray
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Line Of Duty season 6: the cast

A complete guide to all the abbreviations that have cropped up in Line Of Duty so far…

Line Of Duty burst back onto our TV screens last night with its adrenaline-fuelled sixth season premiere. And, naturally, we have been left with so many burning questions about the BBC crime drama.

For instance, who the hell is H? Is DS Steve Arnott’s addiction really going to result in him being killed off? Is DI Kate Fleming a) falling for DCI Jo Davidson, and b) truly on her way to becoming a bent copper? Can AC-12 leader Ted Hasting ever hope to shake off his past disgraces? Who killed the CHIS? And… 

Well, what even is a CHIS? Or an AFO, for that matter?

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You see, that’s one of the many, many, many things we love about Line Of Duty: it never dumbs things down for its audience, with complex police terminology being no exception.

But, while we do appreciate the show’s writers assuming the best of us, it’s still pretty tricky trying to keep up with all those acronyms and abbreviations. 

AC-12 in Line of Duty 

To save you googling everything during the show (you’re going to need to concentrate if you’ve any hope of solving that H mystery), we’ve created a handy glossary to help you out.

You’re welcome.

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AC-12: anti-corruption unit 12

Use: “PC Cafferty, DI Fleming, AC-12.”

ACC: assistant chief constable

Use: “Sir, he was the ACC. I honestly believed it was lawful.”

AFO: authorised firearms officer

Use: “Three AFOs pronounced dead at the scene.”

ANPR: automatic number plate recognition

Use: “ANPR could provide a line of enquiry.”

CHIS: covert human intelligence source

Use: “You need to reveal the identity of your CHIS so we can keep him safe.”

COM: covert operations manager

Use: “Get your COM on the phone, now.”

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DC Chloe Bishop (Shalom Brune-Franklin) will join the cast of Line Of Duty season 6.

DC: detective constable

Use: “DC Bishop, AC-12”

DI: detective inspector

Use: “DI Fleming, AC-12.”

DIR: digital interview recording

Use: “Start the DIR.”

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IR: intelligence report

Use: “Control, Charlie Zulu Five Five, request IR.”

MOPI: management of police information

Use: “There was a code associated with the MOPI notice.”

MPU: missing persons unit

Use: “She’s working with MPU.”

OCG: organised crime group

Use: “The fire arms and balaclavas all fit with the established OCG activity.”

Reg 15: notice of misconduct/gross misconduct

Use: “If you have any doubts, you just watch how fast I’m going to shut down this operation, and serve you, your COM and your UCO with Reg 15s.”

RTC: road traffic collision

Use: “RTC up ahead.”

SFC: strategic firearms commander

Use: “SFC sergeant Danny Waldron, VC5”

Sit rep: situation report

Use: “Stand by for sit rep” / “request sit rep.”

UCO: undercover operative

Use: “Is there a UCO embedded in the OCG that carried out the heroin hijack?”

VO: visiting order

Use: “It’s OK, I used a false name on the VO.”

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Line Of Duty season 6 begins on Sunday at 9pm via BBC One.

You can catch up with old seasons of the police procedural via BBC iPlayer now.

Images: BBC One 


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Kayleigh Dray

Kayleigh Dray is Stylist’s digital editor-at-large. Her specialist topics include comic books, films, TV and feminism. On a weekend, you can usually find her drinking copious amounts of tea and playing boardgames with her friends.

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