Hornall Anderson | 4,621 followers on LinkedIn. Hornall Anderson is now Sid Lee. To catch up on our work, follow us at @sidlee. https://sidlee.com/en/cities/usa | Hornall Anderson is now Sid Lee. Sid Lee is a multidisciplinary global creative agency of brand builders recognized for designing culture-driven communications and experiences. To catch up on our work, follow us at @sidlee.