Gyro International (doing business as GyroHSR) provides marketing communications services for business-to-business clients offering strategy development, digital advertising, media research and planning, interactive marketing, and public relations services. It has particular expertise within the health care sector and has provided its integrated marketing services to build such big-name brands as American Express, Google, and GE. In addition to offices across Europe, the company has offices in Chicago, Cincinnati, Denver, New York, and San Francisco. GyroHSR was formed in April 2009 through the merger of Cincinnati based-HSR Business to Business, Inc and Gyro International, headquartered in London.