My friend has a marker on her due to the the threat of DV, so to me a marker represents an immediate threat of life in danger, why does sloshy have a Marker?
Your friend has a marker on the police national computer and rightly so where there is risk.
Josh, on the other hand, is claiming that he has a special marker in internal systems when allegations are made by the general public. This is to provide special protection as he is special and needs to know in advance what the allegations are. All of this has to be utter rubbish. The irony in thinking that the anti corruption unit would give advanced warning of alleged corruption so that the alleged corrupted officer has the chance to, for example, delete their mobile phone data. It makes no sense especially as the investigators would not see him being the husband of a sinfluencer as mitigation. They would see the online exposure as foolish at best and, at worst, bringing the force into disrepute. Each allegation has to be investigated and treated as the truth no matter who you are.
In any case, all of this is irrelevant as he was sacked for being a corrupt copper who was exposing his role, and the wider police community, to ridicule!
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A warning or a flag that alerts the person using a database to some specific vulnerability or risk. Marker tends to be police jargon for a risk. As
@AnotherMrsJones says, it is used to flag people or addresses as high risk in DV/harassment/stalking. This way the address or person can be given priority if a 999 call is made.
Alternatively, they can be used to warn of a criminal's risk to officers/public. For example, you might see that a person/address has warning markers for for weapons/blood borne diseases/substance misuse, etc. This way, officers and other professionals know to take care when attending. In fairness, they might have warning markers for general stupidity, cringeworthiness, and venereal diseases.
It was an interesting term for her to pick to describe what seemed to be an HR issue... deflecting whilst revealing that they might have had trouble at their address.