CME Group, the global derivatives marketplace, has hired the regulatory head of European trading platform Turquoise, in the latest of a flurry of legal appointments among market infrastructure providers as they deal with a wave of regulation in the wake of the financial crisis.

Evelien van den Arend this month joined the CME Group as an associate director, and assistant general counsel for the European, Middle East and Africa region, according to sources with knowledge of the situation. She is based at the group's London offices.