Passengers travelling from South Africa into England from 9am today (Thursday 24 December) will not be permitted to enter, "reflecting increased risk from new strain of coronavirus".
It includes those who have been in, or transited through, South Africa in the previous 10 days.
British and Irish nationals, visa holders and permanent residents arriving from South Africa will be able to enter but are required to self-isolate for 10 days along with their household.
The UK does not currently have a travel corridor with South Africa, and so anyone who has returned from the country recently should already be self-isolating for 10 days and should continue to do so.