Deia Health is a private integrative GP and lifestyle medicine clinic on Harley Street, offering GP consultations & memberships, health screening, executive health checks and home and hotel visits across London.
We replace the rushed ten-minute appointment with something rarer: time, continuity, and a GP who holds the full thread of your story. Our structured approach brings together the latest insights from clinical medicine, neuroscience, lifestyle science and personalised diagnostics. We consider key areas including nutrition, sleep, movement, stress resilience, environment, emotional wellbeing, genetics and toxin exposure. The aim is always the same: clarity, confidence and meaningful, sustainable health outcomes.
We are proud to have been named Best Holistic Private Healthcare Clinic 2026, London at the GHP Global Excellence Awards.
Deia Health was founded and is led by its Medical Director, Dr Lafina Diamandis - a GMC-registered GP, Member of the Royal College of General Practitioners, and board-certified Lifestyle Medicine physician.
Across 19 years in the NHS and private medicine, she has served as GP to organisations including Goldman Sachs, BUPA, The Telegraph, as well as working in concierge medicine sector.
She trained at King's College London (BSc, MBBS, University College London & Sorbonne (MSc in Brain and Mind Sciences), the British Society of Lifestyle Medicine (Dip IBLM/BSLM) and the Institute for Functional Medicine (AFMCP).
Her particular expertise lies in preventative health, cognitive performance, hormonal health and mental health. She offers the clinical depth that demanding cases require, alongside the kind of listening that makes people feel seen, heard and understood.
Our carefully selected team includes expert clinicians and specialists across medicine, psychology and lifestyle health. Each member shares the same philosophy: meticulous clinical thinking, holistic perspective and compassionate care.Together, we provide joined-up support that reflects the complexity of real life.
Clinical Psychologist
Over a decade helping people navigate their mental health, rooted in CBT and mindfulness.
Holistic Gut Health Dietitian
One of the UK’s leading gut-health dietitians, blending science-backed nutrition with yoga and breathwork.
Somatic Practitioner
A gentle, transformative approach connecting body and emotion to release deep-seated blocks.
Functional Medicine Nutritionist
A leading voice on immune health, autoimmunity and energy, with bespoke functional medicine programmes.
Sports Nutrition Dietitian
Helping women fuel their bodies and rebuild a balanced, compassionate relationship with food.
Eating Disorders Dietitian
Registered dietitian and trainee psychotherapist integrating nutritional and psychological care.
Breathwork & Yoga instructor
Over 15 years teaching yoga, meditation and breathwork, accredited in pregnancy and postnatal yoga.
Reflexology
Kind, skilled and deeply intuitive — sessions that feel like a fine-tuning for body and mind.
Deia Health brings together conventional, lifestyle and functional medicine in one expert team — finding the root causes of ill health to support lasting vitality, healthy ageing and long-term prevention.
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