Kevin Farrell jailed for supplying heroin in Glasgow 20 May 2013 Last updated at 14:36 A man who helped run a major heroin dealing operation from a council flat in Glasgow's south side has been jailed for five years and three months. Kevin Farrell, 27, from Govan, was filmed by police visiting the flat in the city's Pollokshaws area last year. A police raid recovered heroin worth about £23,000 and items for cutting and packaging the drug. They also found Farrell's fingerprints at the scene. Farrell admitted being concerned in the supply of heroin. The High Court in Livingston heard that Farrell was seen coming and going from the high-rise flat in Shawhill Road between 4 October and 12 December last year. Anti-surveillance tactics He used "anti-surveillance tactics" during the visits, such as entering the building through the front door and leaving by the back door. He would also use the lift to go to one floor, then take the stairs to another floor. Detectives identified which flat he was entering from the key fob he used to enter the building. They set up a surveillance camera and, after filming Farrell for more than a month, searched the premises and detained him. The court heard how police recovered 11.5 ounces of heroin with a street value of £23,000. They also seized around 55 kilos of cutting agent - a mixture of paracetamol and caffeine - capable of being used to produce heroin with a street value of £3.85m. A 10-tonne hydraulic press, an industrial face mask and sets of scales, along with other equipment for cutting the drug were also found. Substantial operation Farrell's fingerprints were on the press and everything in the kitchen of the one-bedroom flat that was covered in a fine layer of powdery residue. Jailing Farrell, judge Lord Turnbull told him: "You involved yourself in a very substantial heroin supply operation. The results of that operation would have been misery for those at the consuming end and their families, disruption to other law-abiding citizens who suffer a criminality engaged in to pay for the drugs, and massive profits for those running the organisation. Lord Turnbull told Farrell his involvement had been "central" to the drug supply operation. The judge added: "I have no doubt that I should treat your involvement as constituting a significant role in this enterprise. In the circumstances which I've outlined, only a significant custodial sentence would be appropriate.