CQS, the London firm behind a $5.2bn (€4.3bn) hedge fund, has hired Christopher Carter, former chairman of Credit Suisse First Boston's European business, as its own chairman. He left CSFB last month.

Carter was a former head of the bank's global equity capital markets division, head of European investment banking and a member of CSFB's executive board from 2000 until February 2005.