Government has published guidance to assist employers and businesses in providing advice to staff on:

• the novel coronavirus, COVID-19
• how to help prevent spread of all respiratory infections including COVID-19
• what to do if someone with suspected or confirmed to have COVID-19 has been in a workplace setting
• what advice to give to individuals who have travelled to specific areas, as outlined by the Chief Medical Office
• advice for the certification of absence from work resulting from Covid-19

https://www.gov.uk/government/publications/guidance-to-employers-and-businesses-about-covid-19/guidance-for-employers-and-businesses-on-covid-19 

Government has also announced a series of measures to assist businesses. For more information, please see our page:   Business Advice and Funding