by: Simon Clatworthy, Judith Gloppen & Andrew Morrison at the Centre for Design Research, AHO
web: www.service-innovation.org
case studies: https://www.amazon.com/How-Design-Better-Services-AT-ONE-ebook/dp/B01C43SRMS/ref=sr_1_1?s=digital-text&ie=UTF8&qid=1537229376&sr=1-1
research evidence: http://www.service-innovation.org/tab2
A service design methodology and set of service design tools with both research and practice-based evidence behind them. They are licensed as Creative Commons.