Adam Frost has taught the Guardian's data visualisation masterclass for the last 10 years. He has created infographics for the Guardian, the New Statesman, the BFI and a range of corporate clients. He has also written a series of award-winning infographic factbooks for children. He is currently Content Director at Add Two Digital.

Tobias Sturt has taught the Guardian's data visualisation masterclass for the last 10 years. He has been working in digital storytelling for almost three decades in all kinds of media, from web to TV to games to infographics. He is currently the Creative Director of Add Two Digital.

Jim Kynvin is an award-winning infographic designer. He spent over a decade designing at the Guardian. He now designs for some of the UK's best-known brands, including John Lewis, IKEA and Google.

Sergio Fernández Gallardo has been a graphic designer for almost two decades. His work on Nestle's CSV project won a Digital Communication Award in 2015. His 'WPP BrandZ Top 100 most valuable brands' graphic was shortlisted for an Information is Beautiful Award in 2013. His own work has appeared on the Guardian website and in a range of other publications.