This has been an ever-changing situation, but for people with chronic health issues the key points remain - good hygiene (hand washing) and physical distancing.
For detailed and updated information the following sources are relevant. (control+click to link)
NHS Advice and Information https://www.nhs.uk/conditions/coronavirus-covid-19/
Government Advice and Orders https://www.gov.uk/coronavirus
APF Advice www.actionpulmonaryfibrosis.org/coronavirus/
BLF Support and Advice https://www.blf.org.uk/support-for-you/coronavirus
Public Health Information https://www.gov.uk/government/organisations/public-health-england
Helplines for patients and carers are: APF 01223 785725; BLF 03000 030 555.
It is important to maintain fitness, even if mostly confined to ones home. There is now a section under "Pulmonary Rehab" giving advice on exercising at home.