Germany has become the latest European country to ban most travellers from Britain, to try to slow the spread of the Omicron variant.
German nationals and residents will still be allowed to enter from the UK.
They must have a negative test and quarantine for two weeks, regardless of whether they have been vaccinated.
The measures took effect on Sunday evening. France has already introduced similar curbs as coronavirus infections surge in Britain.
The Robert-Koch-Institut (RKI) - a federal health agency - announced the new rules as it classified the UK as a virus variant area of concern, the highest Covid risk level.
Denmark, France, Norway and Lebanon have also been added to Germany's high risk list and travel from those countries will also be restricted.
The decision was made by the RKI on Saturday, when the UK reported 90,418 new Covid cases - following days of record highs. On Sunday, a further 82,886 cases were reported.