The following Govt. advice (click on link below) was updated on 17th April 2020 and includes a list of people with conditions that are clinically extremely vulnerable. If you have one of the conditions listed but have not been contacted, contact your GP or hospital clinician.
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
The Government is currently advising people that are clinically extremely vulnerable to shield until the end of June and is regularly monitoring this position. Shielding involves:
1. Do not leave your house.
2. Do not attend any gatherings. This includes gatherings of friends and families in private spaces, for example, family homes, weddings and religious services.
3. Strictly avoid contact with someone who is displaying symptoms of coronavirus (COVID-19). These symptoms include high temperature and/or new and continuous cough.