In the early decades of European integration the enforcement of EU competition law was highly centralised. Virtually all enforcement actions under Articles 101 and 102 TFEU were initiated by the European Commission. More recently the enforcement of EU competition law has become less centralised - many would say even decentralised. In 2004, essentially in an effort to increase enforcement capacity in the wake of EU enlargement, the involvement of Member State competition authorities was significantly reinforced by national authorities being given power to pursue infringements of EU competition...