COPS are on a high after seizing a whopping £18 million in cannabis from hundreds of drugs farms in just one year.

The Birmingham Mail can reveal that West Midlands Police seized more than 90,000 cannabis plants and put a major dent in the region’s drug market in the 12 months to last September.

The police figures showed officers dismantled 411 illegal drug growing factories during the period.

Many were hidden inside rented properties, in quiet residential streets, that had been turned into sophisticated drugs factories.

Cops also found them hidden inside disused factories and in giant underground bunkers, including a £2million haul of 6,000 plants – the largest single seizure in the city – in a two-storey drugs den in an industrial unit in Camden Street, Hockley, last February.

The latest success came at 5am on Monday when the police helicopter spotted the tell-tale signs of a cannabis factory in a house as it flew overhead.