# mediamonks-s4-capital > Analysis by Optimly for Optimly AI Visibility, in the Optimly AI Brand Index. Last analyzed September 14, 2026. > S4Capital plc is a tech-led, new age/new era digital advertising, marketing and technology services company established by Sir Martin Sorrell in May 2018. It operates as a unified, purely digital business, disrupting analogue models by embracing content, data&digital media and technology services. - Business Profile: https://optimly.ai/brand/mediamonks-s4-capital - Publisher: Optimly (https://optimly.ai) - Dataset: Optimly AI Brand Index (https://optimly.ai/brand) - Official website: https://s4capital.com/ - Logo: https://logo.clearbit.com/s4capital.com - Slug: mediamonks-s4-capital - Brand Authority Index tier: Emerging - Category: Full-Funnel Digital Marketing Agencies - Last Analyzed: September 14, 2026