Workers at sandwich manufacturer Greencore have been pictured filling sandwiches with ingredients using their bare hands.

The MailOnline report into Greencore’s factory in Worksop, Nottinghamshire, showed images from the factory that the publication said may “at first glance put people off their food”.

The site is the biggest sandwich-making factory in Britain and one of four run by Greencore. It produces three million sandwiches and gets through 300,000 loaves a week.

Around 900 types of sandwiches are made at the site, with 300 changing each year as new fillings are introduced. The company sells sandwiches to retailers including Waitrose, M&S, the Co-op, Sainsbury’s, Asda and Boots, and accounts for 44% of the market.

Greencore explained to the MailOnline that workers do not wear gloves because it makes it easier for them to detect contamination with their hands. Hygiene rules, however, are “stringent”, with workers told to leave the hall and “re-scrub” if they touch their face, for example.

The Mail also found that some workers are paid the minimum wage of £6.50 an hour while workers do shifts of eight to 12 hours. Factories are open 24 hours a day.

The paper’s investigation follows it’s headline last year ‘Is there no one left in Britain who can make a sandwich?’, after Greencore said UK workers did not want to work in the factory.