New law to prevent employers requiring those self-isolating coming to work

By law, from Monday the 28 September 2020, employers must not knowingly require or encourage someone who is being required to self-isolate to come to work.

https://www.gov.uk/government/publications/coronavirus-outbreak-faqs-what-you-can-and-cant-do/coronavirus-outbreak-faqs-what-you-can-and-cant-do

https://www.gov.uk/guidance/working-safely-during-coronavirus-covid-19/offices-and-contact-centres#offices-2-1