Biljana van Rijn is a current President of the UK Chapter of the Society for Psychotherapy Research, an Associate Director of Education at Metanoia Institute in London, psychotherapist, supervisor and a psychotherapy researcher.

She leads the research centre at Metanoia Institute and has established a research clinic. Her focus is practice-based research with a particular interest in theory - building case study research and the process of change in psychotherapy. Biljana has authored numerous research publications using the qualitative, mixed method and quantitative methodologies as well as books on clinical assessment and formulation and working with sexual attraction in counselling and psychotherapy.

Dr. Felicitas Rost works as a Senior Lecturer in Psychology and Psychotherapy at the Open University UK, supervises clinical doctorate students at the Tavistock Clinic, and works as a psychodynamic psychotherapist in the charity sector. She is also the General Vice President of the Society for Psychotherapy Research (SPR). 

Previously, she was the Research Lead at the Tavistock Clinic, where she was involved with the Tavistock Adult Depression Study (TADS) and set up an enhanced ROM for individuals who present with sexually problematic and violent behaviours at the Portman Clinic. Most recently, she spearheaded a five year stakeholder campaign that demanded and achieved crucial methodological revisions of the latest NICE treatment guideline for depression.

She is the PI of the HEARD study – a health economic evaluation of individuals with complex mental health needs. As part of the Talking Therapies Task Force (TTTF), the aim is to promote the development of a national program of psychological therapies for these individuals.

Her current interests are shaped by two beliefs: the need to build bridges between research and clinical practice, and the breaking down of arbitrary hierarchies of types of research evidence.