Travellers arriving in England from 4 am onwards on Monday 18th January must bring with them proof of a negative Coronavirus test.
This will apply to UK citizens and to those arriving from a country on the current travel corridors list though there are some limited exemptions including children under 11 years old and those doing certain jobs.
The test must be taken in the 3 days before the journey to England starts and must meet the requirements set out in this guidance.
Failure to provide a negative test result could mean being unable to board and a fine of £500 upon arrival.
The guidance of course makes the point that those who test positive should not travel.