Speaker: Andy Cotgreave, Founder, How to Speak Data (Former Senior Tableau Evangelist)

Time: 13:30 - 16:30, 21 April 2026

Location: Hilton Hotel - Olympia, London

Organisations invest in collecting and analysing data. But too often, the value is lost at the final stage: how insights are communicated. If your insights don’t land, minds don’t change. This workshop helps you master the “last mile” of data: how to turn analysis into compelling communication that informs, persuades, and inspires.

Drawing on 20 years of experience, Andy Cotgreave will share proven techniques from design, psychology, and AI. Through examples and hands-on exercises, you’ll learn the core “levers” of visualisation and how to craft charts for different contexts (presentations, dashboards, emails, etc). You’ll leave able to communicate data effectively, whether you’re presenting to executives, building public-facing reports, or reusable data applications.

What We Cover

• Visualization Fundamentals: Applying cognitive science to make charts instantly clear.

• Design Theory in Practice: Using universal design principles to create powerful, narrative-driven visualizations.

• Effective Dashboards: Best practices for structuring and designing actionable, insightful data dashboards.

• Presenting Data: Techniques for impactful storytelling, drawing inspiration from masters like Hans Rosling.

• The Ethics of Data: Identifying and analyzing deceptive charts and maps to ensure accurate, trustworthy communication.

Participants will leave with the ability to:

• Design for Impact: Apply cognitive and design principles to instantly improve any chart or dashboard.

• Tell a Story: Structure data presentations that lead audiences to specific conclusions and drive action.

• Become a Critical Consumer: Spot misleading and “sneaky” visualizations, enhancing ethical data communication.