Mr Lee secured a place to study Medicine at Cambridge University in 1986. He graduated with a BA (Hons) in Medical Sciences in 1989, followed by the BChir (1991), MB (1992), and MA (1992). He then completed his basic surgical training in Cambridge, establishing a strong foundation for his surgical career.

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Between 1997 and 2004, Mr Lee undertook specialist training in Urology in London, during which he was awarded a British Urological Foundation Scholarship and won the Short Paper Prize from the Urology Section of the Royal Society of Medicine—recognition of his academic excellence and clinical innovation. He went on to fellowship training in Female, Reconstructive, and Neuro-Urology at the Institute of Urology. In 2003, he obtained the FRCS (Urol) and, the following year, entered the Specialist Register in Urology.

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In 2004, Mr Lee was appointed Consultant Urological Surgeon at St George’s Hospital and Honorary Senior Lecturer at St George’s, University of London. As Head of Department (2008–2011), he pioneered clinical developments, including the introduction of Botulinum toxin for Overactive and Neurogenic Bladder and the wider adoption of artificial urinary sphincter implants in both adult and adolescent patients, significantly improving treatment outcomes.

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Alongside his departmental leadership, he provided specialist urological care at the Atkinson Morley Hospital and the Wolfson Neuro-Rehabilitation Centre. His dedication to education was equally notable: he served as a Personal Tutor and Responsible Examiner for the Penultimate Year OSCE, and as an Educational and Clinical Supervisor, he guided and mentored surgical trainees, helping to shape the next generation of urologists.​

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In 2015, he joined the London Spinal Cord Injury Centre, with a focus on Neuro-Urology and Urodynamics. His commitment to delivering outstanding patient-centred care, combined with a meticulous and forensic approach in both his clinic and expert witness practices, has established his reputation as a respected clinical leader and well-regarded expert witness in Urology and Neuro-Urology. 

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Outside his professional life, Mr Lee values time with his family and also pursues a range of personal interests. He practises martial arts, holding a Second Dan Black Belt in Taekwondo, and is currently training for the BASI Level One ski instructor qualification. In addition, he volunteers with DSUK (Disability Snowsport UK), a national charity that enables people with physical, sensory, or learning disabilities to enjoy snowsports.