Dr Lewis has extensive experience in training clinicians in advanced psychotherapy skills, in particular attachment-based ISTDP. She is an accredited trainer and supervisor with the International Experiential Dynamic Association (IEDTA). She is currently a visiting lecturer at the University of Hertfordshire, teaching ISTDP to doctoral students. She was one of the original founders ISTDP-UK and later co-director, before founding ISTDP London in 2019.
ISTDP London training programmes have been designed in consultation with Dr Robert Neborsky, MD, who has developed the attachment-based ISTDP model.
Training programmes can also be delivered in-house and tailored accordingly. Dr Lewis has trained for and consulted to organisations including the Centre for Continuing Education, University of Oxford, University of Cambridge, British Psychological Society, University of Hertfordshire, Dr Now, Beaconsfield, several NHS trusts and Arsenal Football Club.