One thousand cannabis farms have been raised by West Midlands Police in the last 18 months - an average of 3 or 4 a day.
The latest raid was of a Warehouse in West Bromwich containing a thousand plants with a potential street value of £500,000.
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Very high pollen during warmer drier spells this week.
Heavy showers in the north might give a risk of thunder at first.
Lingering showers will clear through the evening as the cloud breaks.