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Chloe Nicholls

Standards Setter

Chloe Nicholls is one of the UK's most prominent figures in AdTech policy and standards, leading IAB UK's work on programmatic supply chain transparency, privacy-preserving technologies, and industry readiness for a cookieless future. She serves as a critical bridge between technical standards bodies and the practical realities facing UK publishers, agencies, and ad tech vendors navigating a rapidly evolving regulatory and identity landscape. In her role at IAB UK, Nicholls has been instrumental in shaping industry education and guidance around post-third-party-cookie solutions, including alternative identity frameworks and measurement methodologies. She actively contributes to working groups focused on identity resolution and addressability, helping to align UK market participants with both global standards and local regulatory requirements under the UK GDPR and ICO guidance. Nicholls is a regular speaker and contributor at industry events and forums, representing IAB UK's position on issues ranging from the Google Privacy Sandbox to supply path optimization. Her influence spans the full programmatic ecosystem, making her a go-to authority for publishers and buyers seeking clarity on compliance, interoperability, and the future of digital advertising infrastructure in the UK.

Last updated Jun 11, 2026 by ATDb automated enrichment

Role
Head of AdTech
Company
IAB UK
Based
London, United Kingdom

Bio

Chloe Nicholls is one of the UK's most prominent figures in AdTech policy and standards, leading IAB UK's work on programmatic supply chain transparency, privacy-preserving technologies, and industry readiness for a cookieless future. She serves as a critical bridge between technical standards bodies and the practical realities facing UK publishers, agencies, and ad tech vendors navigating a rapidly evolving regulatory and identity landscape. In her role at IAB UK, Nicholls has been instrumental in shaping industry education and guidance around post-third-party-cookie solutions, including alternative identity frameworks and measurement methodologies. She actively contributes to working groups focused on identity resolution and addressability, helping to align UK market participants with both global standards and local regulatory requirements under the UK GDPR and ICO guidance. Nicholls is a regular speaker and contributor at industry events and forums, representing IAB UK's position on issues ranging from the Google Privacy Sandbox to supply path optimization. Her influence spans the full programmatic ecosystem, making her a go-to authority for publishers and buyers seeking clarity on compliance, interoperability, and the future of digital advertising infrastructure in the UK.

Expertise & education

Expertise

Programmatic AdvertisingSupply Chain TransparencyPrivacy-Preserving TechnologiesIdentity ResolutionPost-Cookie EcosystemAdTech Policy and StandardsGoogle Privacy SandboxDigital Advertising Governance

Speaking topics

Post-cookie identity and addressabilityProgrammatic supply chain transparencyPrivacy-preserving advertising technologiesGoogle Privacy Sandbox and UK market implicationsAdTech governance and regulatory compliance

Recognition

Notable achievements

  • Led IAB UK's AdTech policy and standards function, shaping UK industry response to the deprecation of third-party cookies
  • Contributed to industry working groups on identity and measurement, aligning UK market practices with evolving global standards
  • Developed industry education resources on programmatic supply chain transparency and privacy-preserving ad tech for UK publishers and agencies

Publications

  • IAB UK guidance and reports on post-cookie readiness and programmatic transparency