Ifor Ap Glyn
饰：Himself - Presenter
Dafydd Davies-Hughes
饰：Himself - Felin Uchaf Project
Alexander Navarrete Muñoz
饰：Himself - Delft University
Frank Rijsberman
饰：Himself - Director, Golbal Development Programme, Bill and Melin
Jack Sim
饰：Himself - Founder, World Toilet Organisation
Arthur Smith
饰：Self - Comedian