Test Everything!

A fortnightly newsletter for people who believe ‘CRO’ is old-hat and experimentation is the future.  


Practical advice and thought-provoking insight for conversion experts who want to go further.


My promise to you:

  • The most practical tips, advice and frameworks for running a best-in-class experimentation programme
  • The insight and evidence you need to prove the value of digital experimentation to your peers and senior leaders
  • No spam, ever. Just regular goodness to help you with your work.


About me:


My name’s Jonny Longden and I’ve worked in digital analytics and experimentation most of my career. I was Head of Digital Optimisation at Sky, where I built one of the largest in-house conversion optimisation teams in the UK. 


Before that, I worked for VISA and was a director at R/GA, where I consulted for the likes of Nike and Manchester United.


Now I want to share what I’ve learned to help businesses of all shapes and sizes harness the power of digital experimentation.