There exist, as we have explained here, fundamental differences between the inheritance law concepts of the UK and Germany. Since UK probate law requires a personal representative, many testators in the UK appoint an executor in their will. In Germany, however, where a “personal representative” is unknown due to the principle of universal succession, the inheritors come into ownership as well as into possession of the estate automatically and directly. Therefore, appointing an executor (Testamentsvollstrecker) is the exception in Germany, used only in cases where the testator expects the future inheritors to quarrel or where the testators will probably still be under age at the time of inheritance. Furthermore – since the concepts are different – the words “executor” and “Testamentsvollstrecker” are false friends, they have similar but not identical legal powers and obligations.
Now, when a British citizen had all or parts of his estate in Germany at the time of his death, there is the need for a German grant of probate (called “Erbschein”). The probate procedure is explained here and here.