A hard-hitting police campaign is to target a surge in the number of young women hiding guns for men.
Lambeth is one of six priority boroughs where the "Hide his gun and you help commit the crime" advertising campaign will be focussed.
Police said the campaign, focusing on 15 to 19 year old young women of African and African Caribbean heritage, is in response to a recent rise in the number of young women being arrested and convicted for possessing weapons.
This year in London a total of 12 women - of which seven are teenagers - have been charged with possession of a firearm.
In the previous two years a total of 15 were charged.
Claudia Webbe, chair of the Independent Advisory Group for Trident, the Met's specialist black-on-black gun crime unit, said: "Sadly, young women have always been involved in carrying and storing firearms.
"We are deeply concerned, however, that this involvement seems to be increasing and those who are involved seem to be younger and younger.
"Vulnerable young women are sometimes pressurised into storing or transporting the weapons by men they know, or sometimes willingly do so.
"The consequences of this for the young women themselves are devastating. It is vital that we act now to prevent more young women becoming involved in carrying and storing firearms."
Detective Chief Superintendent Helen Ball, head of Trident, said many women believed if caught with a firearm they would not be prosecuted for possession because it was "clearly" not their gun.
She added: "They are wrong. If found guilty of gun possession, they will face a prison sentence, regardless of their sex."
A recent case saw a 15-year-old girl from Brixton handed a 12-month supervision order, three month curfew order, and electronically tagged after a 9mm revolver was found hidden in her bedroom.
Other young people have been jailed for up to three years.
The campaign will specifically target people who listen to R'n'B radio stations and listen to the music genre on popular online music streamer, Spotify.
Posters will be put up at bus stops and trains stations in Lambeth, and street teams will also be distibuting thousands of leaflets.
Check out the advertisements at droptheweapons.org.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here