Contact Us
Request the OTR Overview to explore how we can work with you.
You define the audience and objective.
We deliver the outcome.
Our Founder.
Mark Callender, Managing Director
An events leader with over 16 years' experience designing high-impact, experience-led B2B events for some of the world's most influential technology and business communities.
Mark has held leadership roles across globally recognised platforms including Money20/20 and Mobile World Congress, where he worked with C-suite leaders, governments, scale-ups and global brands to turn content, conversation and experience into commercial outcomes.
OTR Events was created to solve a simple problem: senior leaders don't need more events - they need better engagement. Mark's focus is on creating trusted, closed-door environments where the right people can engage openly, challenge assumptions, and move from discussion to decision.