Convenience food group Greencore has said that given the level of uncertainty, it is too early to predict the impact of Covid-19 on its full year results.
In a statement, the Ireland-based, London-listed group said it is committed to playing its part in keeping the UK fed, working with colleagues, suppliers and customers to maintain food through all scenarios.
Greencore said that over the last 10 days, the impact of Covid-19 has become more pronounced on the wider UK food industry, the grocery sector to which it supplies the vast majority of its products - and on the company.
The group is the biggest pre-packed sandwich maker in the UK.
Greencore said that while much is changing in response to the pandemic, it is apparent that the maintenance of a robust food system - at a manufacturing, distribution and grocery store level - will be an increasingly critical part of the national infrastructure, especially as footfall reduces in foodservice and hospitality formats.
"Currently, from a demand perspective, group volumes are holding up well, albeit there is a pronounced change in mix across different parts of the product portfolio and across customers' store formats," the company said.
Greencore said it is more than five months into its 2020 trading year and trading has been "broadly in line" with its original expectations.
It said that since the emergence of Covid, it has implemented an extensive range of measures to keep colleagues safe.
"The group's supply chain and production network have remained fully operational and levels of customer service have been as strong as ever," it added.
Patrick Coveney, Greencore's chief executive, said the company has three priorities - keeping its colleagues safe, feeding the UK and protecting the business.
"The health and safety of our colleagues, customers and business partners is paramount," Mr Coveney stressed.
"We are closely monitoring all aspects of our business and are confident that we have the team, customer partnerships and protocols in place to maintain food supply through this uncertain period," he added.