Police are looking for a man in connection with what is believed to be the biggest ever cannabis factory found in Kent.
Officers uncovered the operation in August of this year, with around 6000 cannabis plants being found at the derelict building in West Hill.
The street value of the drugs was £4 million.
Officers believe the man they want to talk to uses the name Stefan Nardi, claims to be 37-years-old and Italian.
He is also thought to have links to the Deptford area of London.