It was none of the security officer's business who she was persuing and neither was it mine. If she said she was persuing a criminal, then that was her business and as such as a U.K.police officer she was entitled to walk through security at any U.K. airport which she did!
Wrong. Her abuse of authority was no better than the security persons.
The UK is not a Hollywood film, no authority dressed in black. Police Officers are subject to the same laws and regulations as civilians, whether it is the use of lethal force or taking perfume through airport security.
Her actions are misuse of her warrant card, a disciplinary offence and bringing her force into disrepute.