UPDATE (30/11/21): The Prime Minister announced on 27 November 2021 new, temporary measures to respond to the emergence of UK cases of the Omicron variant. Travel restrictions have been implemented in relation to arrivals from Southern Africa, with a number of countries being placed on the red list. Furthermore, from 30 November all international arrivals, regardless of where they are travelling from, are required to take a Day 2 PCR test and self-isolate until they receive a negative test result. For further information, see Practice Note: Coronavirus (COVID-19)—sickness and other absence [Archived]. Measures to slow the spread of the virus in the UK include the requirements that, from 30 November, (a) face coverings are compulsory in shops and other settings such as banks, post offices and hairdressers, as well as on public transport (but not in hospitality settings)—the Health Protection (Coronavirus, Wearing of Face Coverings) (England) Regulations 2021, SI 2021/1340, and (b) all contacts of suspected Omicron cases must self-isolate for ten days, regardless of their age or vaccination status—the