https://gov.wales/how-self-isolate-when-you-travel-wales-coronavirus-covid-19
Rules are contradictory:
Isolating when arriving from a country under additional measures
From January 2021, the Welsh Government has issued a list of countries and territories that are subject to additional measures where isolation for 10 days is required along with all members of your household. There are other additional isolation rules that you must follow.
There are no categories of person which are exempt from the 10-day isolation requirement. Everyone travelling from a country or territory under additional measures must isolate on arrival in Wales.
If you stay with family and friends, the people you are staying with (household) will also have to isolate for 10 days, even if they did not travel with you originally.
Support to help you isolate in your own accommodation
The people you're staying with do not need to isolate, unless they travelled with you or you develop the symptoms of coronavirus.
Within your accommodation
The people you're staying with do not need to stay at home, unless they travelled with you. Avoid contact with them and minimise the time you spend in shared spaces, like kitchens, bathrooms and sitting areas.
Rules are contradictory:
Isolating when arriving from a country under additional measures
From January 2021, the Welsh Government has issued a list of countries and territories that are subject to additional measures where isolation for 10 days is required along with all members of your household. There are other additional isolation rules that you must follow.
There are no categories of person which are exempt from the 10-day isolation requirement. Everyone travelling from a country or territory under additional measures must isolate on arrival in Wales.
If you stay with family and friends, the people you are staying with (household) will also have to isolate for 10 days, even if they did not travel with you originally.
Support to help you isolate in your own accommodation
The people you're staying with do not need to isolate, unless they travelled with you or you develop the symptoms of coronavirus.
Within your accommodation
The people you're staying with do not need to stay at home, unless they travelled with you. Avoid contact with them and minimise the time you spend in shared spaces, like kitchens, bathrooms and sitting areas.