Gary Brierley has worked on river systems in various parts of Europe, the Middle East, Africa, Japan, North America, and Australasia. He completed undergraduate work in the UK, postgraduate work in Canada, and postdoctoral work in Australia.

Kirstie Fryirs has worked on various river systems in Australia. Her PhD developed a framework for assessing geomorphic river condition and recovery potential.

Gary and Kirstie are codevelopers of the River Styles framework and the River Styles short course.