James Lawley and Penny Tompkins are co-developers of Symbolic Modelling and leading authorities on the use of client-generated metaphor for personal and professional development. They are both practising psychotherapists registered with the United Kingdom Council for Psychotherapy (UKCP). Together they train and supervise therapists, counsellors, coaches, managers and teachers in the use of Symbolic Modelling. Penny was co-managing director of a manufacturing company in the oil industry, and James was a senior manager in the telecommunications business. They use this experience when they coach managers and executives to become more self-aware and to develop their ability to think systemically. They also facilitate teams in the use of Clean Language and metaphor so they can model and learn from themselves. They are married, and live in London.