Two men have been charged with producing up to 1,500 cannabis plants, worth an estimated £1 million, in Littlehampton.
Police discovered the drugs factory in Rope Walk, Littlehampton, at about 3am on Sunday.
Dan Van Tran, 43, of Rope Walk, Littlehampton, and Huong Tien Le, 40, also of Rope Walk, were charged with being concerned in the production of cannabis.
They were both due to appear at Chichester Magistrates' Court this morning.
Inspector Gavin Whitehouse, of Sussex Police, said: "These premises have been dedicated to the production of a significant amount of cannabis, which was bound for the streets of Sussex and potentially beyond.
"Officers from Sussex Police, supported by the local community and our partners, have worked tirelessly over the weekend to investigate this cannabis find.
"Drugs and their associated criminal activity is a blight on the lives of innocent residents and will not be tolerated by police on either Arun District or the wider Sussex Police area.
"While we have seen a very real success here, we will continue to work together with our partners and local communities to disrupt, and ultimately halt, the activity of those prepared to engage in this sort of crime."
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