As Channel 4’s closed-captioning mandate came into effect in March 2026, Cape.io partnered with Diageo, Omnicom Media Group and Virgin Media Television to deliver a truly accessible ad break during the Guinness Men’s Six Nations. More than ad compliance, this moment proved that accessibility can operate at the highest level of live sports broadcasting.

As ad compliance requirements tighten across the UK and Europe, closed captioning has evolved from an accessibility checkbox to a strategic necessity. Whether you're managing CTV campaigns or social media creative, automated ad testing for caption quality is no longer optional - it's fundamental to reaching today's fragmented, multi-screen audiences.

The advertising landscape is facing a seismic shift. By March 1, Channel 4 will become the first UK broadcaster to mandate closed captions across all advertising - including linear TV, streaming, and sponsorships.

The mandate is  a redefined standard for global inclusivity. Here is everything you need to know about the new mandate and how to stay ahead of the curve.

Broadcasters, streamers, agencies and ad tech companies including Google Ad Manager, Equativ, Adform, LiveRamp, The Trade Desk, FreeWheel and Cape.io begin work on practical solutions to reduce complexity and speed up adoption.

Discover how Cape.io partnered with KLM to build AirMail, an innovative AI co-pilot that generates highly customized email campaigns with unprecedented speed, efficiency, and scale.