A FORMER employee of a prestigious smokehouse has claimed tonnes of premium "Scottish" smoked salmon actually came from Norway and Chile.

Denise Chadwick, the former head buyer of award-winning St James Smokehouse in Annan, Dumfries and Galloway, claims the firm routinely passed off lower-priced imports as the genuine article.

The 60-year-old has filed a lawsuit in the US District Court in Newark claiming she was sacked after warning the company's owner he could face jail if the alleged swindle was discovered.

St James denies the claims and says it will "vigorously defend" the "spurious" allegations.

According to Undercurrent, a news website for the seafood industry, Ms Chadwick has given the court copies of e-mails she sent to Brendan Maher, owner of the Miami-based company.

One states: "I think the last time I ordered a full truck from Scotland for smoking in Annan was in August last year and since then I have been buying Norwegian except for when I was instructed to buy Scottish when we had visitors - for example when the FDA [US Food and Drug Administration] came to inspect the factory in Scotland and I had to make sure there was only Scottish salmon on the premises."

Ms Chadwick's lawyer, Aaron Freiwald, said her job was to gauge the price of salmon in the international market and to purchase bulk quantities for sale in the US. Scottish salmon is typically twice as expensive as Chilean salmon.

Ms Chadwick is suing under the state's Conscientious Employee Protection Act, claiming her bosses retaliated against her when she questioned practices that could be in violation of federal seafood safety and marketing rules.

She claims invoices to retailers were deliberately mislabelled to suggest they were from Scotland.

The lawsuit is reported to state: "As chief buyer, Ms Chadwick came under increasing pressure to buy cheaper Chilean salmon, often thousands of pounds at a time.

"Ms Chadwick learned that the cheaper salmon was being sent to smoke houses in Miami and Scotland and then packaged and sold as more expensive Scottish salmon."

Ms Chadwick, who has lived in New Jersey in the US for the last 14 years, was hired by St James as its principal buyer in August 2012.

She claims she was fired by the firm on March 12 - a day after she sent her boss an email warning of the potential for criminal charges.

However, a spokesman for St James said she was told to go in February due to her "failure to perform her services adequately".

The firm, which recently won the Scotland Food and Drink Excellence Award for Exports, claims she asked Mr Maher to reconsider and while he was doing so she sent the emails which have been handed over to the court in attempt to build a case against the company.

The St James spokesman said: "The allegations asserted by Ms Chadwick are false and without any factual support. St James does not conduct its operations in the manner claimed and will vigorously defend these spurious claims. Ms Chadwick's false e-mail was an effort to avoid the consequences of her failure to perform her job responsibilities and the previously announced pending termination."

He added that the firm is already providing documentation to customers "demonstrating the validity of the product provided".

Ms Chadwick was involved in a similar action against her former employer North Landing Ltd in 2012. The case was reported to have been settled out of court.