This guidance is for everyone in England who has been identified as clinically extremely vulnerable from coronavirus (COVID-19). This includes those people who have been identified by the NHS as being clinically extremely vulnerable and those identified through the COVID-19 population risk assessment. All of those identified have been added to the Shielded Patient List, and more information on the criteria used is available below. If you have been identified as being clinically extremely vulnerable, you will previously have received a letter from the NHS or from your GP telling you this. You may also have been advised to shield in the past.
View guidance here : https://www.gov.uk/government/publications/guidance-on-shielding-and-protecting-extremely-vulnerable-persons-from-covid-19/guidance-on-shielding-and-protecting-extremely-vulnerable-persons-from-covid-19