He takes up his new role with immediate effect and will help build on the agency's existing platforms in London and Paris.
Most recently, Collier worked in corporate finance as a partner at ABN Amro Capital (latterly AAC Capital Partners). He also worked at Hill Samuel and BZW before joining Tomkins as director of M&A and acquisition integration.
He then became a partner at ABN Amro Capital where he was responsible for several of the firm's most successful investments. At HeadLand, Collier will help build business in London and Paris and act as an ambassador.