Many have been questioning how Wayne Couzens was able to serve as a police officer despite numerous allegations against him.
Former Met Police Chief Superintendent Parm Sandhu said it was likely he had made comments or displayed inappropriate behaviour at work but people were not in a position to report it.
"If colleagues were not strong or not able to report that, that's because the sexist attitudes still exist in policing and that's right across the country," she told Sky News.
"One of the problems that you've got is if a female in particular makes an allegation against a male officer, that allegation will follow her for the rest of her career.
"If she makes the allegation and then she has to press the emergency button for help at a later date, her team may not respond because teams tend to close ranks there."
She argued policing culture doesn't allow concerns to be brought to the fore because "as far as [senior managers] are concerned, as long as the team is working they're not really concerned about what they would deem to be petty issues".
"So unless you can actually prove it, unless you're willing to go to court, and damage your own career, it's a big step to do that because you will be the one who's isolated," she said