POLICE are raiding a cannabis farm a day in Scotland, with numbers of seizures rising rapidly under the new national force.

Crime gangs are turning to numerous smaller ­properties to minimise their risk of large quantities being uncovered, according to officers. Cannabis is now seen as so profitable and low-risk that Scottish gangs are competing with those from Southeast Asia to try and meet demand.

David Liddell, director of the Scottish Drugs Forum said: "Despite that level of seizures, the availability does not seem to be an issue for users."

The police's infrared technology that identifies the heat required to grow the plants, is also advancing.