We present a method for identifying up-And downstream industries in inter-industry datasets via input-output tables.We apply this approach to aggregated European input-output data and present results on identified industry links and their sensitivity to threshold definitions. We furthermore test the timeconsistency of the up-And downstream assignments based on input-output tables, and discuss the limitations of this method. Finally, the method is used to test anti-competitive effects of non-controlling minority shareholdings.