This work deals with tribunals and administrative justice in England and their reorganisation following the Tribunals, Courts and Enforcement Act 2007 c.15. From the German perspective, this description of the issue is not very telling, since, in the past, even for English lawyers, the term "tribunal" was not easy to define: Too diverse were their tasks, too different their organisation. With the Tribunals, Courts and Enforcement Act 2007 c.15, for the first time, this has changed dramatically. This work, then, shows the significance of the changes against the background of the historical development of tribunals as an essential element in the English administrative justice landscape, and tries to assess the relevance which the newly created structure of tribunals could have on the future progress of administrative law in England. Therefore, it particularly focuses on the relationship between the new Upper Tribunal and the supervisory jurisdiction of the High Court, as it was outlined by the Supreme Court in the recent decision R (on the application of Cart) et al.