UK digital advertising growth could reach £242bn by 2035 via AI

The immediate implication is that the UK's digital economy is now tethered to AI-driven productivity, with 82% of sector businesses already reporting efficiency gains. For the streaming and media ecosystem, this shift suggests a massive migration toward agentic ad buying and creator-led content, which could collectively add billions in market value. The disparity between advertising's AI adoption and the wider economy highlights a specialized tech stack that requires distinct regulatory protections to maintain its global standing. Watch for the UK government's response to IAB UK and DMA calls for a formal AI framework, which will determine if the projected 45% increase in sector employment actually materializes.

IAB UK has positioned itself as the primary lobbying voice for the UK's digital advertising sector, and this report represents its most aggressive quantification of AI's economic contribution to date. The trade body's broader advocacy agenda includes pushing back against the UK government's proposed AI content regulation framework, which would grant ministers sweeping powers over AI-generated material. The tension is direct: the £242bn growth figure is achievable only if the government adopts a permissive stance on AI deployment in advertising, rather than the precautionary approach embedded in proposed legislation that IAB UK has publicly opposed.

The report's timing coincides with a broader UK government review of digital advertising regulation. The Department for Science, Innovation and Technology has been consulting on AI regulation, seeking industry input on how to balance innovation with consumer protection. IAB UK and the DMA have jointly called for a formal AI framework that would provide legal certainty for advertisers deploying AI-driven targeting, creative generation, and programmatic buying at scale. The £242bn projection effectively serves as a negotiating lever, quantifying the economic cost of regulatory inaction or overreach.

The report's methodology was conducted by Public First, a London-based policy research consultancy that joined the Stonehaven Group to bolster international economics and policy expansion. Public First specializes in economic analysis and modelling alongside opinion research, with a dedicated Technology, Media and Telecoms practice. Its projections for IAB UK assume that AI-driven efficiency gains in ad tech, creative production, and audience targeting will compound annually through 2035. The 40% growth figure is contingent on the UK maintaining its position as the world's second-largest digital advertising market, a status currently under pressure from faster-growing markets in Asia-Pacific where regulatory frameworks for AI in advertising remain less defined.