It is important to remember that citizens acquiring Austrian citizenship (durch Verleihung) other than by descent (kraft Abstammung) must renounce their previous citizenship. Follow an amendment of Article 58c StbG, since September 2020 applications for citizenship by declaration (durch Anzeige) have also become possible. This method of application allows the applicant to become an Austrian citizen without having to renounce a previous citizenship.
In 2016, a total of 10 British citizens became Austrian citizens. In 2021 (the latest full year), 1190 British citizens became Austrian citizens, of which 1152 are dual nationals having applied for citizenship by declaration under §58c StbG.