The Cassel Hospital provides treatment for adults with severe and complex personality disorders, and young people with emerging personality disorders who’ve often exhausted all other avenues of help from mental health services.

Patients are treated at Cassel for a minimum of 9 months and a maximum of 33 months:

Inpatient treatment is up to  9 months 
Outreach treatment is up to 24 months 

The treatment path is determined by the patient's individual circumstances and resources available locally. It will be confirmed in consultation with the patient and local team at a second review scheduled at around 5 months.

Our approach and outcomes

We aim to provide evidence-based treatment to reduce people’s symptoms and improve their quality of life. We audit treatment outcomes on a continuous basis to monitor and evaluate the effectiveness of our treatment.

  • Research shows that our treatment:
  • Reduces the number and severity symptoms
  • Reduces self-harm and suicidal ideation (considering or planning suicide and suicide attempts)
  • Improves interpersonal relations
  • Improves occupational capacity
  • Reduces use of local mental health services
  • Is cost effective.

Referrals to the Cassel Hospital can be made by:

  • Consultant psychiatrists
  • Adult mental health services
  • Child and adolescent mental health services for young people at the stage of being transferred to adult services.

Referrals must come from a consultant psychiatrist or from the local community mental health team, with the clearly stated support of the responsible consultant. 

For more information about referrals, or if you have any questions before you make a referral, please contact: 

Cheryl Pavitt
Telephone: 0208 483 2953

Referrals can be made online using the referral form on this page.

As a national specialist (Tier 4) personality disorder service, we have a contract with NHS England for the majority of our beds. 

Local mental health services in England can refer patients for treatment, with no need to apply for funding and without costs to their local health budgets.

Patients from Wales, Northern Ireland and Scotland will require funding from the local authorities responsible for out-of-area treatments.

Inclusion criteria

To be considered for funding, patients must meet the following criteria:

  • Age over 17.5 (age 18 on admission)
  • Male and female patients accepted
  • Have a diagnosis of complex or severe personality disorder
  • Have a significant history of involvement with local mental health services on a Tier 2 and Tier 3 level
  • For outreach treatment, patients must live within the M25 area.

Exclusion criteria

Patients won’t be accepted for treatment funding if any of the following applies to them: 

  • Active risk to others
  • Active and severe substance misuse
  • Primary diagnosis of schizophrenia or bipolar affective disorder
  • Body Mass Index (BMI) below 16
  • (Inpatient treatment only) - if they’re unable to manage weekends at home.

The Cassel’s research unit was established in 1995 to promote and coordinate research into personality disorder.

Our aim is to develop studies in the area of psychoanalytic psychotherapy and psychosocial approaches to personality disorder, and to improve the evidence base of treatment within NHS psychotherapy services.

Over the years, our research unit’s work has helped to establish and consolidate a strong research culture within hospital and psychotherapy services in general.


We’ve published a wide range of research articles and papers in peer-reviewed journals.


We offer both clinical and research internships which consist of a 6-month placement in the inpatient service, outpatient service or research unit.


For information about the work of the research unit and internships, please contact:

Sofia Robinson
Telephone: 020 8483 2972

We’re a multidisciplinary team of nurses, clinical psychologists and psychotherapists and specialist community support.

Senior team

Clinical Lead
Dr. Kimberley Barlow
Consultant Psychiatrist in Psychotherapy, Cassel Hospital and Outreach Service

Dr. Miriam Barrett
Consultant Psychiatrist in Psychotherapy, Inpatient Clinical Lead

Dr Beate Schumacher
Head of Psychotherapy and Social Work

Amanda Mackenzie
Senior Nurse

Daksha Samani
Senior Social Worker

Bradley Platt
Service Manager


Curtis de Leon
Outreach Group Psychotherapist

Alexandra Dorrington
Inpatient and Outreach Group Psychotherapist

Monika Flakowicz
Highly Specialist Adult Psychotherapist

John Glyn
Principle Adult Psychotherapist

Trish Hynes
Principle Adult Psychotherapist

Nursing team

Menat Abdoun
Charge Nurse

Karen Albans
Charge Nurse

Anne Kagumana
Healthcare Assistant

Sarah Miell
Charge Nurse

Betty Ongewe
Healthcare Assistant

Simmi Protab
Charge Nurse

James Robinson
Charge Nurse

Alexandra Ruffer
Charge Nurse

Stefan Skwara
Clinical Team Leader

Paul Stokes
Charge Nurse

Annalie Van Den Heever
Charge Nurse

Administration Team

Jennifer Lomath
Administration lead

Cheryl Pavitt
Inpatient service and referrals 

Sofia Robinson 
Outreach service and Research