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Dr Jonny Coxon
GP and Specialist in Gender and Sexual Medicine
GMC number 4431912

Dr Leighton J Seal

Through my years working with trans and non-binary people, it has been my pleasure to meet an incredible variety of people from a wide range of backgrounds. I know many have faced huge challenges to arrive at this point. I hope to help make a journey towards hormone therapy a smooth and safe one. Once there has been endorsement for hormone therapy from one of my colleagues, I will always endeavour to make this pathway straightforward and to minimise delays wherever (safely) possible. I continue to respond very promptly to any queries from clients and healthcare professionals alike. Informed by a background in General Practice in addition to my NHS Gender Identity Clinic role, I continue to adopt a holistic clinical approach in my work; I am familiar with managing a very broad spectrum of mental and physical health conditions.

Medical background:
I trained at Oxford University, qualifying in 1997 (BM, BCh, MA).

I initially pursued a Urology career path, including a spell as a Research Fellow at St George's Hospital from 2002 to 2004. Alongside clinical work, my research in prostate cancer was published in several publications, and led to the award of the MD postgraduate degree (University of London). During that time, I also worked in a team carrying out research in sexual function.

I then completed specialist training in General Practice, becoming a Member of the Royal College of General Practitioners in the 2007 after achieving the highest mark in that sitting of the written examination. I maintained my interest in Sexual Medicine and Men's Health, and also gained a qualification in Women's Health through the Diploma of the Royal College of Obstetricians and Gynaecologists.

In 2016, after extensive training overseen by the European Society of Sexual Medicine, including a dedicated focus on gender dysphoria, I gained the Fellowship of the European Committee of Sexual Medicine.

Since 2017 I have worked at the NHS Gender Identity Clinic in London. In this latter role, I specialise in the endocrine (hormone) and general medical aspects of gender medicine.

I speak regularly on different aspects of Sexual Medicine at various events around the country. I am Past-President of the British Society for Sexual Medicine. I sit on the committee of the Primary Care Testosterone Advisory Group, and on the Editorial Board of Trends in Urology and Men's Health. I am Secretary for the Primary Care Urology Society and previously a Trustee for the Sexual Advice Association. I am a full member of the British Association of Gender Identity Specialists (BAGIS).

Clients I have not consulted with before: For enquiries regarding how to book appointments and information required, please initially email via Current waiting time is around 4-6 months.

Clients I have consulted with before: Please check my letters first for possible answers to queries, then of course still get in touch if needed. To book review appointments (if you have consulted with me before), please now use this link for online booking:

Selection of publications:
Coxon J, Seal L. Medical Management to support trans men in a gender identity clinic. In: Kirby RS, Carson III CC, White A, Kirby MG (eds). Men's Health 4th Edition. Boca Raton: CRC Press, 2021.

Kirby M, Coxon J. The metabolic syndrome, erectile dysfunction and testosterone deficiency. BJUI Knowledge 2019 (Source manuscript for e-learning module, accessed online)

Kirby M, Coxon J. Erectile Dysfunction: Drugs. In: Camm AJ, Lüscher TF, Maurer G, Serruys PW (eds). The ESC Textbook of Cardiovascular Medicine. Oxford: Oxford University Press, 2018.

Coxon J, Seal L. Hormone management of trans women. Trends in Urology & Men's Health 2018 9(6): 10-14

Coxon J, Seal L. Hormone management of trans men. Trends in Urology & Men's Health 2018 9(5): 8-12

Coxon J, Rees J. Avoiding medical errors in general practice. Trends in Urology & Men's Health 2015; 6(4): 13-17.

I am continuing to focus mainly on online appointments but am also offering face-to-face / in-person consultations. I am based at:

Mount Stuart Hospital
St Vincent's Rd

As above, clients I have not consulted with before: please email

For those with whom I have consulted before, for review consultations only, please go straight to this online booking link:

For appointments/correspondence to Dr Coxon
please email:
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