Illegal immigrants have been caught in UK Border Agency raids on Grantham takeaways.
Officers paid an unannounced visit to the Emperor's Kitchen, Westgate, on October 23. They arrested a Chinese man, aged 32, after checks showed that he had no right to be in the UK.
They also visited the Peking Wok, in Wharf Road on November 7. Two Chinese nationals were arrested - a 45-year-old woman who had overstayed her visa and a 19-year-old man who had entered the UK illegally.
All three illegal migrants remain in detention while the agency takes action to remove them to China as soon as possible.
Both businesses were served with potential fines of up to £10,000 per illegal worker which will have to be paid unless they can prove they took sufficient steps to confirm the right to work of the foreign nationals, such as checking passports.
Rachel Challis, from the UK Border Agency in Lincolnshire, said:
"Any foreign national who is in the UK illegally should be in no doubt that they will be found, arrested and removed from the country.
"Businesses that take on illegal workers face heavy fines and possible prosecution. "We urge any members of the public to please report any suspicions about people who might be here illegally."
Anyone with information about suspected immigration abuse can contact Crimestoppers on 0800 555 111 anonymously or visit http://www.ukba.homeoffice.gov.uk/aboutus/contact/report-crime