Trust successful policing is "hanging by a thread" aft the David Carrick case, elder officers person warned.
One main constable described this week arsenic "one of the darkest" successful decades for the profession.
It comes aft the Metropolitan Police admitted it "missed opportunities" to drawback Carrick.
Carrick has pleaded blameworthy to dozens of rape and intersexual offences against 12 women committed portion helium was a serving serviceman successful the Met Police.
The 48-year-old "used the information helium was a constabulary serviceman to power and coerce his victims", the Met has said.
Lucy D'Orsi, Chief Constable of British Transport Police (BTP), said the Carrick lawsuit had kept her awake astatine nighttime and called for large reforms to vetting procedures.
In a blog post, she wrote: "David Carrick was a transgression with a warrant card. But it's casual to accidental helium wasn't 1 of us. He was.
"And that's wherefore it feels truthful shameful that helium was escaped to maltreatment women for truthful agelong without the alarm bells being heard."
She called for caller checks to automatically emblem if an arrested idiosyncratic is simply a constabulary officer, informing that nether the existent strategy DNA and prints are not checked against constabulary databases for matches.
The Met has confirmed that Carrick came to the attraction of constabulary implicit 9 incidents, including rape allegations, betwixt 2000 and 2021.
The BTP main said "others could autumn done the cracks and spell connected to bash harm" without changes.
Humberside Police's Chief Constable Lee Freeman said "I genuinely judge that the aboriginal of policing by consent is nether threat" successful a stark connection to chap officers.
He wrote connected the force's website: "It utilized to beryllium unthinkable that specified crimes could beryllium committed by a serving subordinate of a constabulary force, but sadly, I deliberation that for immoderate members of the public, this behaviour is nary longer considered unbelievable."
On Carrick, Mr Freeman added: "He was 1 of america - similar it oregon not."
Chief Constable Sir Iain Livingstone, caput of Police Scotland, said Carrick "should ne'er person been successful the constabulary service" and called his offending "despicable".
Speaking aft helium was knighted astatine a ceremonial successful Edinburgh this week, helium said officers request to gain the public's spot "every azygous day".
Carrick was sacked by the Met connected Tuesday aft pleading blameworthy to 2 decades of brutal offending against a drawstring of women.
He utilized his presumption arsenic a constabulary serviceman to proceed offending until October 2021 erstwhile a unfortunate came guardant to study him.
The probe that followed uncovered an "unprecedented" drawstring of crimes and his leader was forced to admit it "should person spotted his signifier of abusive behaviour and due to the fact that we didn't, we missed opportunities to region him from the organisation".
Home Secretary Suella Braverman has launched a reappraisal into constabulary dismissals and warned that much shocking cases whitethorn travel to airy amid renewed scrutiny.