I would urge you to think very carefully about this. Although you say you are coming "home", the rest of your post implies that home is Munich. If your normal home is Munich, the emergency regulations do NOT permit you to visit our stay at your parents home in Scotland. I would expect you to be quizzed very thoroughly at immigration about your reason for travel. The limitations on travel are strict (stricter in Scotland than England) and they are being enforced by Police Scotland.