You could look through which recruiters are hiring on the "Career Opportunities" page of this site, or look up the latest list of top-rated MC recruiters (within a report from Top-Consultant). That said, you're better to find jobs you're interested in/qualified for and apply to them, regardless of who the recruiter is - recruiters work for the employer, and don't pay much heed to speculative CVs. You're only likely to get yourself put on some generic mailing lists.