Interaction Powers Success. This philosophy comes to life every day at The Gillespie Agency. As a full-service advertising, media and public relations firm which has been named the Midlands of South Carolina's second largest according to The State newspaper, we provide comprehensive marketing services for a diverse group of clients. Straight-forward thinking is one of the qualities of which The Gillespie Agency is most proud. Combine that with our portfolio of award-winning work, and it's easy to see why clients remain committed to our agency. We believe there is more to marketing than cool creative. Our clients' profits are most important. Ultimately, what every client wants is results. And results are exactly what The Gillespie Agency provides.