Anyone who has visited or transited through the banned countries in the last 10 days will also be subject to the restrictions.
Non-UK residents will be refused entry.
British and Irish nationals, or third country nationals with residence rights in the UK can return from any of the now 33 countries on the ban list, but are required to self-isolate at home for 10 days, along with anyone else they live with.
More police checks will be carried out at home addresses to ensure that people are self-isolating.
“There are still too many people coming in and out of our country each day. The rules are clear—people should be staying at home unless they have a valid reason to leave. Going on holiday is not a valid reason,” Home Secretary Priti Patel said is a statement.
Prime Minister Boris Johnson confirmed that all travellers wishing to leave the UK will be questioned about their reasons for travel.
There will also be stronger police enforcement, with increased police presence at airports and ports. Anyone found to be in breach of the rules could be fined.
The news follows the earlier announcement on Jan. 18, confirming that all passengers entering England, including British citizens, need to provide evidence of a negative pre-departure test for the CCP virus.