Scores of serving Metropolitan Police officers have drink-driving convictions, figures released under the Freedom of Information Act confirm.
There are 31,000 police officers in the Met
Sixty one had drink-driving records and another 13 had convictions or cautions for minor assault or criminal damage.
The figures cover offences between 2000 and 2005 and also show 100 officers with convictions had left the force.
The force says it takes any instance where staff conduct brings the force into disrepute "extremely seriously".
In a statement, it said: "Police officers are required to inform the MPS if they are convicted of a criminal offence, misconduct matters are then considered by the Directorate of Professional Standards."
It added: "The Metropolitan Police expects its staff to behave professionally, ethically and with the utmost of integrity at all times."
Any officer or police employee with a criminal conviction is subject to misconduct proceedings. They can face anything from being fined a few days' pay to being dismissed.
Shami Chakrabarti, director of civil rights group Liberty, said the force should publicly state that no police officers are serving after being convicted of serious offences like dishonesty or violence.
Rodney Warren, director of the Criminal Law Solicitors' Association, was surprised the number of serving officers with convictions was "that high".
But he said "Every judgement has got to be made by the appropriate officer, probably a chief constable, to address the issue of public confidence.
"These figures collectively might cause some concern, but individually the facts of each case might not do that."
The Metropolitan Police, Britain's biggest police force, employs about 31,000 officers.
The figures were revealed following a request made under the Freedom of Information Act by the Independent newspaper.