Former Metropolitan Police officer Wayne Couzens has pleaded guilty to three counts of indecent exposure.
The incidents occurred in Kent, including two offenses at a fast-food restaurant in February 2021 and another at a woodland in Deal in 2020.
Three remaining charges will be left on file.
The 50-year-old entered the pleas via video link from Frankland Prison, where he is serving a whole-life sentence for the kidnap, rape, and murder of 33-year-old Sarah Everard.
The guilty pleas reveal that Couzens was a serial sex offender before he murdered Ms. Everard.
Couzens is due to be sentenced on 6 March.