Four men have been jailed for a total of 55 years for their part in buying and dealing heroin worth more than £20 million.
Marin Veres, 24, of Findon Road, Edmonton Green and 32-year-old Murat Yilmazer of Gloucester Road, Bruce Grove, were both sentenced to 13 years in prison after being convicted of one count of supplying heroin.
Murat Gungor, 36, of East London was sentenced to 15 years for two counts of conspiracy to supply heroin.
Bladar Haxhiaj, 33 from Newcastle was also convicted of one count of conspiracy to support heroin and was jailed for 14 years.
The four men were sentenced at Wood Green Crown Court in Lordship Lane, on Thursday, January 23.
They were part of a network of a further 20 men and two women arrested between March and November 2013 by the Met’s Central and Criminal Task Force.
Detective Inspector Chris Heerey, who led the investigation for the Central and Organised Task Force, said: “These most recent sentences demonstrate that those who choose to deal in illegal drugs will feel the full force of the Met.
"This was a lengthy and complex investigation which has stopped huge quantities of potentially lethal drugs from making it onto the streets.
"Our message is clear: if you deal in drugs we will find you, we will arrest you and you will be put in front of the courts to face the consequences."
Other arrests included:
Carlton Gordon, 46, of south-west London, who was jailed for 12 years for drug trafficking.
Afzul Miah, of east London, attempted to discard 3kg of heroin and pleaded guilty to possession with intent to supply. He was sentenced to six years and eight months in prison.
Teddy Bright, 35, was jailed for eight years; Paul Abassa Kamara, 31, was jailed for five years and eight months and Carmiel Shay, 31, four years and eight months for possession of heroin with intent to supply after they were found with nearly 15kg of the drug.
Marcuss Tatt, 32, and Anthony Graham, 24, were found heating a large amount of cocaine to create crack cocaine in North West London. The pair appeared at Blackfriars Crown court and were each sentenced to six years imprisonment.
Marin Veres, 24, was caught driving a van in Enfield, north London that contained 47 kilograms of heroin. Earlier on the same day officers from the task force stopped a vehicle in Birmingham in which Murat Gungor, 36, and Murat Yilmaze, 32, were travelling. They were all later charged with conspiracy to supply heroin.
Their arrests led police to Bledar Haxhiaj, 33, who was later spotted removing packages from a Jeep at a golf club in Derbyshire. The vehicle was searched and 11kg of heroin were recovered.
Tarik Bakkali, 39, was sentenced to 14 years and four months for intent to supply heroin, cocaine and cannabis as well as money laundering offences.
His girlfriend, Karen Henningham, 37, was sentenced to three years and four months when she was seen leaving their property with suitcases containing £1million in used notes.