Who we are


Dr Daniel Davis - Principal Investigator

I am the PI for the Delirium and Population Health Informatics Cohort (DELPHIC) study, which tracks cognitive and functional status before, during and after hospitalisation in a population sample of older people.


I am a Wellcome Trust Intermediate Clinical Fellow and Honorary Consultant in Geriatric Medicine. My primary interest is the relationship between delirium and/or acute illness and trajectories of cognitive decline in large population-representative studies.

I am keen to understand these relationships in their broadest sense, from the pathophysiological underpinnings through to the implications for health care policy.



Dr Jo Hornby – Study Manager

I’m currently the Study manager for LINKAGE-Camden study, which involves ensuring the study follows the regulatory and ethical requirements, completed on time and within budget. 


Prior to joining the LINKAGE-Camden team I worked as a trial manager in the e-Health Unit at UCL on a feasibility trial comparing face to face alcohol treatment with supported access to web based treatment for hazardous or harmful drinkers. I have worked at several large pharmaceutical companies in the Clinical Project Manager role and have experience in Phase I to IV clinical trials covering the therapeutic areas of anti-infectives, osteoporosis, oncology, cardiovascular, stem cell therapy and diabetes.

Helen Bowden - Research Practitioner

I am currently a Research Practitioner for Linkage-Camden, my role is to recruit and complete health and cognitive assessments with study participants.


I am an Occupational Therapist originally trained in New Zealand and have many years of experience working in a variety of settings across health and social care. Before joining Linkage-Camden I worked in a Diagnostic Memory Clinic contributing to the diagnostic process for people experiencing cognitive impairment, dementia and delirium. I enjoy working with older people and hope the Linkage-Camden study will provide knowledge that will improve health outcomes and help patients to re-gain independence after leaving hospital.


Katrin Hoffmann – Research Practitioner

Along with my colleague Helen, I’m working as a Research Practitioner for the LINKAGE-Camden study, which involves recruitment and cognitive assessment of study participants. 


Prior to joining the LINKAGE-Camden team, I worked as a UCL Research Practitioner for the 100,000 Genomes Project. I was responsible for the coordination and facilitation of England-wide recruitment of patients with Early Onset and Familial Parkinson’s.

I have a background in nursing (NMC RN) with >10 years of experience in different medical disciplines in Germany and Austria, and I volunteered as a medical professional in humanitarian aid missions (Haiti, Brazil, Philippines). I am a Graduate Psychologist (MBPsS) with an MSc in Cross-Cultural Psychology, and I gained research experience in Austria, Ethiopia, Tanzania, and the UK. I am interested in traveling and languages and enjoy the interaction with our culturally diverse study participants.

Rachel Perera - Research Assistant

Along with Rebecca, I conduct the initial and follow-up assessments with participants either over the phone or in their home. The assessment involves answering questions about your health, memory and any disabilities.


Before joining LINKAGE-Camden I completed a Masters at the Division of Psychiatry at UCL in Clinical Mental Health Sciences. I have worked within various mental health services and charities, where my role varied from organising activities to engage patients with dementia living in care homes to being a smoking cessation advisor for patients with severe psychosis.


Rebecca Street - Research Assistant

Along with Rachel, I conduct the initial and follow-up assessment with participants either over the phone or in their home. The assessment involves answering questions about your health, memory and any disabilities.


Before joining the LINKAGE-Camden team I worked for the National Dementia Helpline as a Helpline adviser. My role was to provide those affected by dementia with information, advice and emotional support. Before that I worked and volunteered for the Join Dementia Research Helpline. I supported individuals who were interested in taking part in dementia research, sign-up to Join Dementia Research. I also have a BSc in Psychology from Royal Holloway University of London.




Address: LINKAGE-Camden Study, South Wing, St Pancras Hospital, 4 St Pancras Way  NW1 0PE

Tel: 0203 028 7067 or 0203 028 7066 

Email: linkage-camden@ucl.ac.uk

Long-term Information and Knowledge for Ageing - Camden