Five-day cordon after drugs factory discovery leads to Sheffield man's jail term
Sheffield man jailed after police uncover huge drugs lab linked to national supply network
A Sheffield man has been jailed for 10-and-a-half years after police discovered a large drugs lab inside a house.
Radoslaw Golec, 37, of Eckington Road, admitted conspiracy to produce Class A drug MDMA and Class B amphetamine, being involved in supplying the drugs, and possessing criminal property.
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He was sentenced at Hull Crown Court on Friday, June 19.
The investigation began in November 2025 after concerns were raised about repeated deliveries of chemicals to a property on Cavill Place in Hull.
When officers arrived, Golec ran from the address.
Inside, police found what they described as a large-scale drugs laboratory containing industrial equipment and chemicals capable of producing significant amounts of illegal drugs.
Because of the hazardous chemicals found inside, a police cordon remained in place for five days while specialist teams made the scene safe and dismantled the lab.
Officers recovered quantities of amphetamine, methamphetamine, MDMA and mephedrone, as well as around £14,800 in cash believed to be linked to criminal activity.
A pill press used to make MDMA tablets was also seized.
As the investigation continued, detectives uncovered evidence they said pointed to a wider organised crime operation.
Police found messages on mobile phones relating to the purchase of specialist laboratory equipment from China using cryptocurrency.
Detectives also found evidence suggesting drugs were being moved around the country using courier services.
The investigation uncovered references to around 70kg of mephedrone with an estimated value of £280,000.
Fingerprint evidence placed Golec inside the laboratory and CCTV footage showed him regularly visiting the property, police said.
Golec remained wanted until April this year, when officers located and arrested him in a Sheffield supermarket car park.
Police said keys found during his arrest led them to another property in Sheffield, where they recovered smaller quantities of suspected drugs, a label-printing machine and a vacuum bag sealer.
Detective Chief Inspector Chris Swaby said: "This was a highly complex investigation which uncovered a dangerous drugs lab operating on a significant scale, with a complete disregard for the risks posed to the public and neighbouring residents.
"Golec was motivated by greed and financial gain, producing and supplying harmful drugs with no concern for the devastating impact these substances have on individuals, families and communities."
Nine other people arrested as part of the investigation remain on conditional bail while enquiries continue.