S4 Capital Plc engages in the provision of digital advertising and marketing services. It operates through the Content Practice, and Data and Digital Media segments. The Content Practice segment includes creative content, campaigns, and assets for paid, social, and earned media from digital platforms and apps to brand activations that aim to convert consumers at every possible touchpoint. The Data and Digital Media segment encompasses full-service campaign management analytics, creative production and ad serving, platform and systems integration and transition, and training and education. The company was founded on November 14, 2016 and is headquartered in London, the United Kingdom.