Recite Me

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David Lee

Director of Corporate Governance

David Lee

David has worked in the Trust since 2016 and in the NHS since 1988.

His first role was an A&C4 post and his initial period in the NHS was 8 years working in community health councils, representing the patient and public interest. He then moved into senior management where his roles have included setting up the first integrated care organisation in London in 2002, Director of Strategy, Foundation Trust Company Secretary, Deputy Chief Executive, Director of Corporate and Business Development, Foundation Trust Programme Director and Director of Planning and Corporate Governance. After 13 years in Camden & Islington he moved to Hounslow and Richmond Community Healthcare NHS Trust, before joining SWLSTG.

David also has extensive social care experience from his time as an elected member in local government when he served five years as a chair of social services.

His qualifications include an MSc in Management in the Public Sector.

Dr Ali Hasan

Ali Hasan web2

Dr Ali joined us in May 2015. He trained as a doctor at St George's Hospital Medical School, and practiced medicine in teaching hospitals in London.


He also was involved in research, teaching, and other endeavours during training and clinical practice. He subsequently joined McKinsey & Company, then worked as Regional Medical Director at Bupa, and also undertook independent advisory work and was a board member of Parafricta, a medical products company. He is currently Clinical Operations Director at Vitality Health. He is also Director at the Healthcare Purchasing Alliance, and Chairman at CCSD. In addition to being a physician, Ali is also a Member of the Faculty of Public Health and a Fellow of the Faculty of Medical Leadership and Management. 


Juliet Armstrong


Juliet joined the Trust in June 2019.

A graduate of Imperial College London, Juliet was until recently a Consultancy Senior Partner with more than 30 years’ experience in over 20 FTSE100/250 organisations working across a range of industry sectors including retail, retail banking, health (NHS and private sector), membership organisations/regulators and consumer goods.

Juliet worked with Boards, senior  leadership teams and steering committees to shape strategy and led or scrutinised delivery, and specialised in complex, large-scale transformational change with significant capital and revenue budgets.

Juliet is a Trustee at The Makaton Charity, which promotes the Makaton language programme to help people with learning or communication difficulties and was a Trustee for 6 years at The House of St. Barnabas in Soho, an innovative charity tackling homelessness.

Richard Flatman

Richard Flatman web

Richard was appointed as a non-executive director and Chair of the Audit Committee from 1 April 2016.

He is a Chartered Director and a Fellow of the Institute of Chartered Accountants in England and Wales and has extensive business and commercial expertise.

Richard has been Chief Financial Officer at London South Bank University since 2002 and has combined this with a wide range of non-executive roles in higher education including Governor of the University of Wales, Newport and more recently the University of South Wales. Before joining London South Bank, Richard specialised in audit and risk consulting services with Deloitte.

Doreen McCollin

Non - Executive Director

Doreen edit

Doreen McCollin is a retired adult and mental health nurse, who now devotes much of her time to charity and voluntery work. 

Doreen was Director of Nursing at Partnerships in Care and CEO / COO at Vista Healthcare. She has served as Committee Member of the RCN Forensic Nursing Forum, Committee Member of the Royal College of Psychiatry Quality Network, a member of the educational board for the British Journal of Forensic Practice, and as a member of the educational board for the British Journal of Wellbeing.

Doreen’s experience lies predominantly within the forensic mental health setting where she worked for more than 20 years. Doreen has experience at management/senior management level both in the independent sector and the NHS with more than 25 years working within the public sector. She has been involved in commissioning of low secure and step down facilities to compliment medium secure provision for women, creating a clear care pathway. Doreen is a trustee on a local south London foodbank. Personal and  professional interests: Fellow of the Institute of Health Service Managers, Fellow of the Royal Society for Public Health, Fellow of the Institute of  Chartered Managers

Qualifications. MA in Health Studies, Diploma in Management, Diploma in Management Studies, Diploma in Social Research Methodology, Registered Mental Nurse, Registered General Nurse.