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.





Dr Samuel Searle - PhD student

I am pursuing a PhD at University College London (UCL) on frailty in the acute care setting by the grace of my wife Amy and Labrador retriever. The potential benefits discovered by the LINKAGE study is what attracted me to leave Canada and study at UCL.


I am a geriatrician based out of Canada. I have academic training in the United States, Canada and the United Kingdom. 


Address: LINKAGE-Camden Study, The Roger Williams Building, 69-75 Chenies Mews, Bloomsbury, London WC1E 6HX

Tel: 020 7670 5720  or 020 7670 5721 

Email: linkage-camden@ucl.ac.uk

Long-term Information and Knowledge for Ageing - Camden