[Only just come across this though it’s not very active in recent years – found it because the titular Eve Mittleton-Kelly spoke at a Systems Innovation even https://www.youtube.com/watch?v=RPa_hNN5cGk]

The EMK Complexity Group has been working for over 20 years, with organisations in the private and public sectors to address practical complex problems. In the process it has developed a theory of complex social systems and an integrated methodology using both qualitative and quantitative tools and methods.

About | EMK Complexity Group

http://emk-complexity.org/about/

Projects (appear to be quite outdated) http://emk-complexity.org/projects/

Publications http://emk-complexity.org/publications/

YouTube channel – nothing new for six years but / and a great selection of absolutely core complexity people including most of the big names: https://www.youtube.com/channel/UCaY7I2J4X_0dMyndQSqma2g

Biography, complexity guide, complexity links http://emk-complexity.org/guide/