A search warrant lead police to uncover stolen vehicles, firearms and a cannabis factory.
Police disrupted the organised criminal operation after they carried out a search at an industrial site in Thames Road, Dartford.
Met police and inspectors from GAIN (Government Intelligence Network) discovered eight stolen vehicles, firearms, ammunition, cash and a large quantity of other stolen property worth tens of thousands of pounds.
A large amount of drugs and a cannabis factory were also seized.
Three men were arrested on suspicion of handling stolen goods, and another was arrested on suspicion of a firearms offence.
Another man was arrested on suspicion of production of cannabis. All of the men were released under investigation.
Chief Inspector Knight, from the Met’s South Area BCU, said: "I am immensely proud of the work of officers and partner agencies in this operation.
"We have disrupted criminal activity across London and have recovered stolen property, drugs and vehicles.
"I am immensely proud of the work of officers and partner agencies in this operation...." Chief Inspector Knight
“I am delighted to be able to inform the victims of these offences that their property has been recovered and people arrested in connection with these offences.
“Working alongside The Government Intelligence Network and other partners we have also opened new lines of inquiry which I have no doubt will lead to further police and partner intervention.
"I will continue to work with the new lines of inquiry to target criminals across London and further search warrants and enforcement should be anticipated in coming months.”
A Government Agency Intelligence Network (London) spokesperson said: “By working in partnership, sharing intelligence lawfully and efficiently, the GAIN aims to ensure that government agencies along with police will help reduce the risk, threat and harm from serious and organised crime, in the most cost effective way.
"Today's action follows months of collaborative hard work by GAIN who are dedicated to dismantling crime networks which benefit from inflicting misery on communities.”