After qualifying as a psychotherapist, Beverley Costa set up Mothertongue multi-ethnic counselling service (2000-2018) for multilingual clients. In 2009 she created a pool of mental health interpreters, in 2010 she established the national Bilingual Therapist and Mental Health Interpreter Forum and founded The Pásalo Project in 2017 to disseminate learning from Mothertongue.
She has trained over 5,000 therapists for NHS services and NGOs, in working therapeutically across languages and with interpreters since 2013. She is a Senior Practitioner Fellow at Birkbeck, University of London and in 2023 she was granted the title Senior Visiting Research Fellow in the School of Arts and Communication Design at the University of Reading.
Beverley has run Reflective Practice Support groups for interpreters, psychological therapists and counsellors, nurses, teachers, lawyers, and psychosocial workers. She has developed an introductory course in facilitator skills for running Reflective Practice Groups which has been delivered online to organisations in England, Scotland and Wales.