More than 210,000 illegal cigarettes and a quantity of illegal tobacco, worth £74,000, was seized in King’s Lynn on Monday by Norfolk County Council Trading Standards.
The items were found in two businesses and one vehicle and around £1,000 cash was also seized.
A spokesman for trading standards said the haul was seized after inspections conducted at four retail businesses, two residential properties and a number of vehicles.
The operation was carried out by Trading Standards officials and officers from Norfolk police and West Norfolk Council.
It followed intelligence received from the public, businesses and police.
Specialist tobacco detection dogs were also used in the operation.
Margaret Dewsbury, chairman of the county council’s communities committee, said: “The problem of illegal tobacco goes beyond the impact to the local economy through lost duty.
“Many of these retailers are selling to young people at low prices and putting their own profits first.
“Some of these retailers are involved in organised criminal gangs and are connected to other crime such as modern day slavery and human trafficking.
“I hope these raids will reinforce the message that we do not tolerate the sale of illegal tobacco in our county.”
Local Policing Commander, Temporary Chief Inspector Amie Abbs, said: “This result highlights our commitment to work with partners to target criminal activity, including those involved in organised crime.”
If you have any intelligence call 03454 040506 or go on online at: www.citizensadvice.org.uk/consumer or call 101.