Police officers from Operation Reacher seized the plants from Nottinghamshire properties.
Police in Ashfield said on 10 December:
‘Officers seized 360 cannabis plants from a house in Sutton.
‘A further 199 plants were found in an industrial unit.
‘A grow worth an estimated £850,000 was also recovered from another Nottinghamshire industrial premises.
‘Electricity in the unit had been bypassed and the grow was spread across multiple rooms in the building.