David Weston is the founder and Chief Executive of the Teacher Development Trust, the UK national charity for effective professional development. He is the Chair of the UK Department for Education’s Teachers’ Professional Development Expert Group and, alongside Bridget Clay, wrote Unleashing Great Teaching: the secrets to the most effective teacher development. David taught maths and physics for ten years in two schools in the England. David speaks and writes frequently for education sector and UK national media and has had a number of radio and TV appearances on the subject of teaching, teacher development and LGBT issues.