“As of 19 March 2020, COVID-19 is no longer considered to be a high consequence infectious disease (HCID) in the UK.
“Now that more is known about COVID-19, the public health bodies in the UK have reviewed the most up to date information about COVID-19 against the UK HCID criteria. They have determined that several features have now changed; in particular, more information is available about mortality rates (low overall), and there is now greater clinical awareness and a specific and sensitive laboratory test, the availability of which continues to increase. The Advisory Committee on Dangerous Pathogens (ACDP) is also of the opinion that COVID-19 should no longer be classified as an HCID.”
This announcement puts the SARS-CoV-2 virus and COVID-19 into the standard category of an infectious disease, which would include types of “regular” flu.
In the same directive, information is given on what Britain considers to be HCID. That includes four types of Avian influenza and SARS (Severe Acute Respiratory Syndrome), although, as the note says, no cases of SARS have been reported there since 2004.