Sigma Assessment Systems Categories Business and Management Consulting 127 Albert Street London Ontario N6A 1L9 1-800-265-1285 ext 233 Send Email Visit Website About Us Build Better Leaders with SIGMA Assessment Systems. Rep/Contact Info Glen Harrison × Glen Harrison Phone: 1-800-265-1285 ext 233 127 Albert Street London Ontario N6A 1L9 Sharon Vanduynhoven × Sharon Vanduynhoven Phone: 1-800-265-1285 Send an Email Share × Print Email Facebook Twitter LinkedIn Pinterest Tell a Friend ×