An illegal immigrant was chained up and beaten after he tried to escape from a cannabis farm in Leyland, a court was told.

Mahn Nguyen thought he had been employed as a cleaner at the house in Canberra Road. Instead Preston Crown Court heard the Vietnamese national found himself looking after more than 250 plants being cultivated in the neat semi-detached property.

When the 32-year-old fled he was captured by gang bosses and assaulted, before having his ankles chained up to prevent him running away again. When he appeared before a judge this week Nguyen pleaded guilty to being concerned in the production of cannabis and was sentenced to 41 weeks in prison.

But because he had already spent more than six months in jail on remand waiting for a court appearance he is likely to be released almost immediately. Recorder Fiona Clancy told him his sentence of less than a year fell short of automatic deportation, although the final decision would rest with the Home Office.

David Clarke, prosecuting, said Nguyen entered the UK illegally in the summer of 2023 and had been struggling to find employment. Police raided the house in Canberra Road in September last year after residents raised suspicion about the premises being used for cannabis production.

When they entered they found Nguyen in the hallway. They also discovered 56 cannabis plants in the downstairs lounge, with 146 in three upstairs bedrooms and a further 50 in the attic. The plants were at various stages of maturity, with a “substantial” number well-established.

The estimated street value of the drugs haul was at least £52,800, although that did not include the 50 in the attic and 70 small plants in one of the bedrooms, making the potential return much higher.

Officers also found two mobile phones, one of which was described as a “burner” for use by the drugs gang. It was clear that Nguyen had been living at the address because there was fresh food in the fridge and clothing and toothbrushes in the bathroom.

In a prepared statement to police he said he had been looking for work and had met a Mr Zu in Liverpool who had offered him a job cleaning the house in Leyland. When he was driven there he realised it was a cannabis farm and immediately told Mr Zu he didn’t want the job.

He was threatened with physical violence and locked in. At one point he had tried to escape “because he didn’t want to be involved in the cannabis growing”. But he had been captured and taken back to the house where his feet were shackled to prevent another escape.

He was beaten and told he had to look after the plants. He was given food and accommodation, but no money. “He was threatened and coerced by Mr Zu and felt he had no choice but to stay,” added Mr Clarke.

Barrister Constance Halliwell, for Nguyen, said her client had been in the UK illegally for three years and had made an asylum application which had then been withdrawn. He had been unable to make a fresh application because of the time he had spent in custody on remand. He had been locked in the house, threatened with violence if he didn’t look after the plants and at one time had been shackled by the ankle. “He found he had no choice but to stay,” she explained.

Recorder Clancy said Nguyen’s case did not reach the threshold for modern day slavery. Under guidelines she could only sentence him to a maximum of 12 months in prison and, because she had to allow him a 20 per cent reduction for pleading guilty, he did not meet the criteria for automatic deportation (12 months or more).

She said he had played a lesser role in the cannabis cultivation and he had no previous convictions in the UK. She ordered the destruction of the drugs and paraphernalia found in Canberra Road and the confiscation of the two mobile phones.