A CCTV image of a man accused of harassment after repeatedly ringing his victim's doorbell has been released by police in Waltham Forest.
Suspect 153532 is wanted for allegedly targeting the home of a woman in her thirties between April and June this year.
The victim, who lives in the High Street area of Walthamstow and police say there is no known motive.
The CCTV image has been released to the Guardian as part of a joint venture with the Metropolitan Police to identify potential perpetrators of unsolved crimes in the borough.
Anyone with information is asked contact Waltham Forest police on 101 or call Crimestoppers anonymously on 0800 555 111.