Line of Duty series 5

Line of Duty series 5 acronyms and initialisms explained

Do you know your OCG from your UCO?

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Although Line of Duty’s AC-12 unit does not exist in reality, plenty of the jargon used in the BBC crime thriller is used by police officers.

And while Jed Mercurio’s drama starring Vicky McClure, Martin Compston and Adrian Dunbar is never less than compelling, some of the terms used by AC-12’s officers can be a little confusing for us civvies.

But hopefully ED!’s guide to police abbreviations below will help demystify what is being expressed – even if a plot twist is always just round the corner to present the likes of DI Kate Fleming, DS Steve Arnott and Superintendent Ted Hastings with fresh problems and challenges.

However, there is one Line of Duty initial we couldn’t explain and retains its mystery: who is ‘H’?

‘Get the LIO and the MIT down to the RTC in an ARV. And I’ll have a CUP of TEA, too please’ (Credit: BBC)

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Line of Duty acronyms and abbreviations – and what they mean

AC-12 – Anti-Corruption Unit 12

ARU – Armed Response Unit

ARV – Armed Response Vehicle

B&E – Breaking and entering

Blue-on-blue (incident) – The accidental shooting or injury of a police officer by a fellow police officer

CID – Criminal Investigation Department

CIS – Crime Information System

CPS – Crown Prosecution Service

D&D – Drunk and Disorderly

DIR – Digital Interview Recorder

DPS – Directorate of Professional Standards

DVU – Domestic Violence Unit

ED905 – In series five of LOD this code refers to a lorry load of heroin 

GBH – Grievous Bodily Harm

IC – Identification Codes

IC9 – Unknown

ID – Identification

IRTC – Injury Road Traffic Collision

IRV – Incident Response Vehicle Job – A crime, especially a robbery

LEO – Local Enforcement Officer

LIO – Local Intelligence Officer

MIT – Major incident team

Kate knows the difference between a DS and a DI (Credit: BBC)

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NCPA – No Cause for Police Action

NCS – National Crime Squad

NDIU – National Drugs Intelligence Unit

NOK – Next Of Kin

OCG – Organised Crime Group

OBBO – Observation

OP – Observation Point

PCSO – Police Community Support Officer

RCU – Road Crime Unit

Reg 15 – A regulation 15 notice advises an officer that a complaint has been made against them

RTA – Road Traffic Accident

RTC – Road Traffic Collision

SCD – Specialist Crime Directorate

SCG – Serious Crime Group

SO – Specialist Operations

SOCA – Serious and Organised Crime Agency

TC – Traffic Collision

TFU – Tactical Firearms Unit

TOA – Time of Arrival

TWOC – Taking (a vehicle) Without Owner’s Consent

UCO – Under Cover Of

VSS – Victim Support Scheme

Will Arnott work out who H is? Not thanks to this glossary he won’t (Credit: BBC)

Line of Duty acronyms and initialisms – police rankings and roles

AFO –Authorised Firearms Officer

DC – Detective Constable 

DS – Detective Sergeant

DI – Detective Inspector

DCI – Detective Chief Inspector

Det Supt – Detective Superintendent

DCS – Detective Chief Superintendent

ACC – Assistant Chief Constable

DCC – Detective Chief Constable

CC – Chief Constable

CSE – Crime Scene Examiner

FI – Forensic Investigator

FLO – Family Liaison Officer

FME – Forensics Medical Examiner

PCSO – Police Community Support Officer

SIO – Senior Investigating Officer

UCO – Undercover Officer

– Line of Duty airs on BBC One on Sundays at 9pm

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