He spearheaded the physical theatre movement in the eighties as a soloist and toured to over 40 countries. In the nineties he established The David Glass Ensemble to explore collaborative ensemble theatre, creating award winning productions such Gormenghast and Les Enfants de Paradis. He went on to develop The Lost Child Project, a participatory theatre project working with street children in 15 countries. He also established the Centre for Creative Development in Cambodia using creative practice to help development workers engage creatively with one another.
Since 2007 David has been teaching and facilitating in drama schools, universities and arts centres.