Lewisham police have launched a new operation to tackle the borough's most prolific robbers, burglars and drug dealers.
So far, 14 people have been arrested under Operation Yarra for offences including burglary, artifice burglary, theft, robbery, possession of a firearm and possession of drugs with intent to supply.
Officers have also seized class B drugs with a total street value of £10,000 in Lee.
Raids have been carried out in Downham's Geraint Road and Shroffold Road, along with Stoneycroft Close and Kimbolton Close in Lee.
Detective Chief Inspector Barry Smith, in charge of the operation, said: "I want burglars, robbers and drug dealers in Lewisham to understand that we will be targeting them, making a concerted effort to arrest and bring them to justice.
"We will be targeting a number of areas across the borough were police officers both in plain clothes and uniform will be working to disrupt criminal activities.
"We will leave no stone unturned and will focus our resources on operation Yarra until we are satisfied that we have arrested and disrupted all our top, prolific offenders."
Anyone with information about crime should call Crimestoppers on 0800 555 111.