The industrial unit in Linton was found to contain plants worth more than £1 million.
Police were called when the building's landlord found fifteen hundred plants.
More top news
Any showers should die away this evening with most places dry overnight.
The veteran rockers Status Quo have been forced to postpone a concert in Norwich this weekend after frontman Francis Rossi became ill
Police are ramping up security at the British Grand Prix at Silverstone this year in the wake of a number of terror attacks.