Mediazoo Named UK’s Number One Internal Communications Agency by PRWeek for Third Year Running
Mediazoo has topped the internal communications category in PRWeek’s Top 150 league table of UK agencies for the third consecutive year Internal comms revenue grew seven per cent year-on-year to £3.9m, more than twice that of its nearest competitor in the table The agency was also ranked in the top five for ESG communications in the same PRWeek Top 150 ranking, securing fourth place “Three years at number one, and almost twice the revenue of our nearest rival, says something about the appetite for internal communication that actually changes behaviour. That is the work we are built for,” says Giles Smith, CEO of Mediazoo Group.
Mediazoo, the global learning & communications agency and Human Performance specialists, has been ranked number one for internal communications in PRWeek’s Top 150 league table of UK agencies for the third consecutive year. Internal comms revenue grew seven per cent year-on-year to £3.9m, more than twice the revenue of its nearest competitor in the table.
The result reflects sustained demand from clients for internal communication that drives engagement, behaviour change and culture, not just messaging. As organisations navigate hybrid working, AI adoption and rising employee expectations, internal comms has moved firmly into the centre of business performance, and Mediazoo’s scale and growth in the discipline reflect that shift.
Mediazoo’s position at the top of the Internal Communications list reflects its work as the Human Performance specialists, helping clients connect strategy, creativity and behaviour so that internal communication translates into the way people actually work. Recent work spans leadership communication, change and transformation, AI adoption, culture and engagement programmes for major UK and global employers.
Giles Smith, CEO of Mediazoo Group, said: “Three years at the top of the PRWeek Internal Comms list, and revenue almost twice that of our nearest rival, tells a clear story about what our clients are looking for. Internal communication is where strategy meets behaviour and where culture is made. As the Human Performance specialists, we focus on three things: equipping leaders, enabling teams and scaling impact. That is how we help organisations turn ambition into action, and how internal communication earns its place at the centre of business performance.”
Mediazoo was also named in the top five for ESG communications in the same PRWeek Top 150 ranking, securing fourth place in the ESG league table. The dual recognition reflects the breadth of the group’s communications offer across the disciplines that matter most for trust, engagement and reputation. ESG continues to be a high-growth, high-scrutiny area, with clients increasingly looking for authentic, evidence-led work tied to measurable behaviour change.
Mediazoo Group will continue to invest across internal communications, ESG, leadership communication and learning through 2026, with a continued focus on programmes that embed sustainable behaviours and measurable outcomes across the workforce.