Kati St Clair has been working as a therapist and business mentor for over 30 years in London and Oxford, practising a unique method that uses tools from a wide range of psychological schools. Her international client base includes senior executives, politicians, actors and writers. As well as working with individuals, Kati St Clair has acted as advisor to management teams of some of the UK's largest companies.

Kati St Clair is a regular choice as a commentator and social observer on CNN, Sky News, ITN News and Channel Five News and gives frequent radio interviews.Her first book, The Bullshit Factor: the truth about corporate disguises, lies & denial, is published by Artesian Publishing. The Bullshit Factor analyses the corporate psyche as a key factor in business success or failure. It is written in collaboration with broadcaster Dr James Bellini.

Kati St Clair was born in Hungary, the daughter of the Head of Intelligence. She trained as a Clinical Psychologist at Eötvös Loránd University, Budapest before defecting to the UK. Kati studied Experimental Psychology at Oxford University and graduated with a BA and MA.