A co-founder of the European Mentoring and Coaching Council (EMCC) and its predecessor organisation in 1992, David is now EMCC Special Ambassador. He is visiting professor in the coaching and mentoring faculties of both Oxford Brookes and Sheffield Hallam Universities and author or co-author of 54 books, of which a third are in the area of coaching and mentoring.

He is regarded as a leading global authority on coaching and mentoring.