One of the biggest ever cannabis factories has been discovered on a chicken farm in the UK, it has been claimed.

More than 3,100 plants  – believed to be worth approximately £1.5 million – were discovered in poultry barns at the farm, named the Three Angels Farm, located in Staffordshire, England.

Six men were arrested as part of a major police operation targeting the farm.

With the potential to grow three to four crops per year, it has been claimed that the farm could have earned £5 million every year.

The raid occured last Tuesday, December 5.

The six “farmers” who were arrested are believed to have been working there full-time and lived on-site.

The men, aged between 17 and 44 years, are from the UK and Albania.

Inspector Richard Meaden, South Staffordshire local policing commander, said: “The investigation is at an early stage, however we can confirm that approximately 3,100 cannabis plants were recovered. This estimated value of this crop is estimated to be worth £1.5 million.

“This is the largest and most sophisticated cannabis factory I’ve ever experienced and I am delighted we have been able to take such a large number of drugs off the streets.”