I qualified with a Doctorate in Clinical Psychology from UCL in 2009 and have been working in the NHS with children and families ever since. I have a post-graduate diploma in Family Therapy from the Tavistock and and I am a BPS approved clinical supervisor since 2014. 

I am fluent in English, Spanish and French and I have had an international upbringing. I have an interest in how culture, faith and language influences our view of the world and I bring this curiosity into our sessions and work together. I take a holistic systems approach to therapy that considers and values you, your family and the networks around you.


I specialise in working with families to overcome difficulties and reach their preferred futures. I have expertise in working in paediatrics with children living with physical health conditions that are life limiting and life shortening. I currently work at the Royal London part-time and have worked at UCLH, The Evelina Children's Hospital, Great Ormond Street Hospital, and Addenbrooke's Hospital.


Everyone is unique and the right therapy for you may include a range of models and techniques based on your personal goals for coming to therapy and your preferences. We may be working 1:1, with your whole family, or with some family members on their own (e.g. individual work, parent work, couple therapy). My work is guided by evidence-based models and I use Cognitive Behavioural Therapy (CBT), Solution Focused Therapy, Family Therapy, Motivational Interviewing and Clinical Hypnosis. If you would like to know more about these models please do not hesitate to ask.


I represent psychology at a national and international level. I am a member of the Faculty of Children and Young People and a committee member of he Paediatric Psychology Network, acting as Communications and PR lead. I regularly present and run workshops at national and international conferences and I offer Webinars and public speaking.


I am a mother to a little girl and two Norwegian Forest Cats and I enjoy running, doing yoga, and traveling around the world to do my favourite sports, skiing, surfing and diving.

HCPC registered Practitioner Psychologist and chartered member of the BPS

Who is Dr MDC?


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Principal Clinical Psychologist 

October 2002 - now: Royal London Hospital, London

Paediatric dentistry

Principal Clinical Psychologist 

October 2014-July 2015: Great Ormond Street Hospital, London

National Centre for High Functioning Autism

Senior Clinical Psychologist 

February 2013-May 2019: Addenbrooke’s Hospital, Cambridge

Cystic Fibrosis and General Paediatrics

Highly Specialist Clinical Psychologist

March 2012-February 2013: Addenbrooke’s, Cambridge

Paediatric diabetes, endocrinology and Disorders of Sex Development

Highly Specialist Clinical Psychologist

October 2009-March 2012: Evelina Children's Hospital, London

Clinical lead for paediatric neurology and Teenage and Young Adult (TYA) Oncology services.

Trainee Clinical Psychologist (University College London) 

October 2006-October 2007: Community Mental Health Team, London

October 2007-April 2008: Learning Disabilities Service, London

April 2008-Sept 2008: Northern Health Centre, Community CAMHS, London

Sept 2008-Sept 2009: UCLH, Child & Adolescent Psychological Medicine, London


  • 2014: BPS approved certificate in Clinical Supervision (12 CPD training hours)

  • 2012: PgDIP in Systemic Theory and Practice, University of East London

  • 2009: Doctorate in Clinical Psychology, University College London

  • 2004: MSc Psychological Approaches to Health, University of Leeds

  • 2003: BSc Hons Psychology, York University

Professional registrations: 

  • HCPC: Practitioner Psychologist Registration number: PYL25229

  • Chartered Member of the British Psychological Society (BPS) 

  • Full-member of the Division of Clinical Psychology (DCP)

  • Member of the Faculty for Children, Young People and their Families

  • Committee Member of the Paediatric Psychology Network (PPN-UK)

  • Communications & PR for the PPN-UK


Public Speaking

  • 2019: Talking to children about COVID-19 – A practical family toolkit (Webinar) – Leaders Plus UK

  • 2018:The use of social media in paediatric psychology -  European Paediatric Psychology Conference, Ghent

  • 2017: Transitions in Health Care – DCP conference, Liverpool 

  • 2016: A Solution Focused Protocol for Annual Reviews in CF. Paediatric Psychology Network Conference, Edinburgh

  • 2012: Involving teenagers and young adults (TYA) in their care. European Paediatric Psychology conference, Oxford


Publications & Research

  • Maidment, Megan & Deiros Collado, Martha & Young, Judith. (2019). Young people's views on psychological therapy within an outpatient paediatric diabetes service. 8. 18. 

  • Young, Judith & O'Curry, Sara & Mastroyannopoulou, Kiki & Deiros Collado, Martha & Gibbins, Jonathan & Donnan, Janie & Gray, Victoria & Griffiths, Helen. (2018). Paediatric Psychology Network United Kingdom (PPN-UK): From inception to the current day. Clinical Practice in Pediatric Psychology. 

  • Maidment, Megan & Deiros Collado, Martha & Young, Judith. (2015). Experiences of Psychological Therapy within an Outpatient Paediatric Diabetes Clinic: Young People's Perspectives on What Helps.

  • Chivers, C., Deiros Collado, M., & Burns, J (2017). Disorders of Sex Development: Mothers’ Experiences of Support, Clinical Child Psychology & Psychiatry 

  • Deiros Collado, M. (2011) 1001 solution-focused questions: A handbook for solution-focused interviewing, Journal of Mental Health, 20:6, 605-606