TWO Vietnamese men caught at a disused mill where cannabis with an estimated street value of more than £1 million was found had been trafficked to the UK and locked in the building, it is alleged.

Dat Nguyan, 18, and Long Do, 28, pleaded not guilty at Bradford Crown Court today to production of cannabis, between August 1 and December 1 last year.

Both Vietnamese nationals were remanded back into custody to be tried on May 10.

They say they were acting under duress and the door to the disused four-storey mill, in Merchant's Quay, Ashley Lane, Shipley, was locked from the outside when police officers attended the building in December last year.