We urge citizens before taking action to organize their trip to Germany and United Kingdom, even before booking a flight or buying a ticket to get acquainted in detail with the information about the country - the purpose of their trip.
Special attention should be paid to the specific requirements for entry into that country. In case of non-compliance with the mandatory conditions, passengers will not be admitted to the territory of the country in which they arrived.
For travelers to Germany actual information could be found here!
If you spent time in a risk area (high-risk area or area of variants of concern), Bulgaria is a high-risk area, you are required, in general, to complete the Digital Registration on Entry. https://www.einreiseanmeldung.de/#/
For travelers to UK actual information could be found here!