US asset managers have resumed the pre-crisis trend of opening outposts in London, with bond manager Loomis, Sayles & Company starting up a full-service office. Meanwhile, US fund of hedge funds manager Grosvenor Capital Management has appointed a local director, Andre du Plessis.

These moves follow the arrival of equity managers Artisan Partners and Calamos, which gained authorisation from the UK's Financial Services Authority in July 2010.