Tom Harrison, Senior Director of Growth, joins Ozone to strengthen the digital advertising business’ platform presence and expand strategic partnerships.
Tom will report directly to Ozone’s global Chief Revenue Officer, Craig Tuck, and work alongside Emma Cranston, Senior Director of Advertising.
Ozone, the leading digital advertising business, today announces the appointment of Tom Harrison as Senior Director of Growth, a newly created role to drive platform presence and strategic partnerships – rooted in technology and data – with agency and advertiser clients.
Tom brings 18 years of agency expertise to Ozone, mostly recently serving as Head of Outcomes, UK at Omnicom Media Group UK, with senior programmatic positions at Manning Gottlieb OMD and formerly at Mindshare. With a wealth of industry experience, Tom is well-positioned to understand the needs and priorities of both agencies and advertisers.
Reporting directly to Ozone’s global Chief Revenue Officer, Craig Tuck, and working alongside Emma Cranston, Senior Director of Advertising, Tom will oversee initiatives that strengthen commercial partnerships and drive platform adoption. To this end, Jhan Hancock-Rushton and Frances Lazenby, Ozone’s Client & Strategy Director and Strategic Solutions Director respectively, will report to Tom. He will also ensure that Ozone’s partnerships support wider business growth across international markets, including Europe, the US and Asia. Tom joins Ozone on Monday, 3 November, 2025.
This appointment comes as Ozone rapidly expands across both sides of the Atlantic. The company has increased its global headcount by 20% in the first half of the year, adding talent in London, Manchester and New York, while also strengthening its engineering and data capabilities. Ozone recently launched its Audience Connection Platform in the United States, where it is expected to scale to 205 million Americans every month – almost three-quarters of the country’s online population. In the UK, the Ozone platform reaches nine in 10 online users a month, almost 60% of whom are seen every day*.
Craig Tuck, Chief Revenue Officer, Ozone, said: “Over the past seven years, we’ve worked hard to create a really credible, premium alternative to the major digital platforms. Today, we connect brands to audiences across 50 of the world’s most trusted and best-known publisher groups. As we continue to expand our reach and deliver better outcomes for our customers, this newly created role will be pivotal in driving meaningful, ‘platform scale’ partnerships with both existing and new agency and advertiser clients. We’re thrilled to welcome Tom to the team, his wealth of experience will play a key part in creating and scaling incremental value for our audience-first publisher partners and deliver a real connection advantage for our clients.”
Tom Harrison, incoming Senior Director of Growth, Ozone, said: “I’m thrilled to join Ozone in this newly created role. After eighteen years on the agency side, I’ve seen firsthand the value that strong partnerships can deliver. Ozone’s rapid growth in recent years is extremely exciting and I’m looking forward to helping clients harness the platform’s audience connection capabilities in smarter, more creative ways—building partnerships that deliver real impact across the UK and beyond.”
*Source: Ipsos iris, August 2025; PAMCo H2 2025
