UK Film Board Deploys AI to Rate HBO Max's Entire Catalog

The British Board of Film Classification has disclosed that it built and deployed a custom artificial intelligence system to classify HBO Max's complete content library before the streaming service launched in the United Kingdom earlier this year.

According to the BBFC's annual report for 2025, the AI tool enabled the ratings body to process the entire HBO Max catalog in six months—work that would have otherwise required approximately 1,570 compliance officer working days using traditional methods.

How the AI system works

The BBFC's proprietary tool generates detailed metadata that flags specific content issues including violence, nudity, and language for human reviewers to examine. While the AI handles initial screening and data compilation, final age ratings and tailored content advisories remain exclusively under the authority of BBFC compliance officers.

This marks the first time the 113-year-old organization has employed AI technology in its classification process, representing a significant operational shift for the body responsible for rating films and streaming content across the UK.

Record cinema classifications

Beyond its streaming work, the BBFC classified 1,315 theatrical releases in 2025—the highest total in its history and an increase from the previous record of 1,256 films in 2024. The 15 rating remained most common at 45% of cinema submissions, with 12A close behind at 35%. The 18 classification accounted for just 4% of theatrical films.

Why it matters

The deployment of AI for content classification addresses a fundamental scaling challenge facing ratings bodies worldwide. As streaming platforms expand their libraries and launch in new markets, manual review processes cannot keep pace with the volume of content requiring age-appropriate ratings. The BBFC's approach—using AI for preliminary analysis while preserving human judgment for final decisions—offers a template for maintaining classification standards without creating regulatory bottlenecks that could delay platform launches or leave content unrated. The six-month turnaround for HBO Max's catalog demonstrates how AI can compress timelines that would otherwise span years.

Streaming partnerships expand

The report also noted that 2025 marked five years since the BBFC established its self-rating partnership with Netflix, the first such arrangement between the board and a streaming service. Under this model, Netflix rates its UK content according to BBFC Classification Guidelines, an approach that other platforms have since adopted.

Phil Clapp, chief executive of the UK Cinema Association, emphasized the significance of the record classification numbers. "The BBFC classifying a record-breaking 1,315 feature films in 2025 highlights the resilience and vitality of the UK cinema sector," Clapp said, adding that the figures reflect increased cinema attendance among younger audiences.

These details were first reported by Variety.