Great sites
Trivia
The "Dusseldorf building site" that features extensively throughout the first series was not in Dusseldorf at all. It was not even in Germany. A replica of a German building site was constructed on the back lot at Elstree Studios in Herfordshire. When filming of the first series of Auf Weideserhen Pet was completed in early 1984, the site was levelled and it became Albert Square, Walford, Londom, E20 - the home of the Soap Opera "EastEnders" to this day. See more...
I'm afraid there aren't any mistakes listed for series 3.