Twelve people charged with conspiracy to supply controlled drugs appeared at Lincoln Magistrates’ Court on Friday.
Nine of the defendants were remanded in custody, and are due to appear at Lincoln Crown Court on November 3.
Those remanded in custody from Grantham are Jonathan Paul Ferry, 45, of Larch Close, Paul Hull, 46, of Grantley Street, Stuart Frazier, 53, of Princess Drive, Adam Higgs, 23, of Shaw Road and Ashley Toulson, 26, of Edward Street.
Also currently in custody are James Straw, 49, of Petersmith Drive, New Ollerton, Newark, Tyrone Sly, 44, of Bye Path Road, Retford, Ryan Anderson, 29, of Walmer Street, Gorton, Manchester and Luke Smith, 25, of Goulden Street, Salford.
The three other defendants, Jamie Darby, 38, of Princess Drive, Grantham, Anthony Morton, 26, of Tamar Court, Grantham and Francesca Moynihan, 21, of Hawthorn Drive, Salford were bailed and must also attend Lincoln Crown Court on November 3.
The arrests took place last week following a joint operation between Lincolnshire Police and the East Midlands Special Operations Unit, which saw searches carried out in Grantham, Nottinghamshire and Greater Manchester.