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

Dr Leighton J Seal
I trained at Oxford University where I acquired a 1st Class Honours Degree in Physiological Sciences in 1994, before qualifying (BM, BCh) in 1997.

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.

I now balance two NHS roles, which reward me with a good breadth of medical experience. Since 2009, I have been a GP Partner at the Beaconsfield Medical Practice in Brighton. Since 2017 I have worked at the Gender Identity Clinic in London. In this latter role, I specialise in the endocrine (hormone) and general medical aspects of care, working with and being trained by Dr Leighton Seal.

I speak regularly on different aspects of sexual medicine at various events around the country. I am President-Elect of the British Society of 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 a Trustee for the Sexual Advice Association, and Secretary for the Primary Care Urology Society. I am a full member of the British Association of Gender Identity Specialists (BAGIS).

***November 2021: For enquiries regarding how to book appointments and information required, please initially email via Current waiting time is around 5-6 months. Established patients: please check my letters first for possible answers to queries, then of course still get in touch if needed.***

Recent 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 I am based at:

Nuffield Health Brighton Hospital
Warren Rd

Appointment enquiries:
Please email Dr Coxon first for information:

Established patients:
Please check my letters first for possible answers to queries, then of course still ask if needed.

From October 2022, I will be based at:

Mount Stuart Hospital
St Vincent's Rd


For appointments/correspondence to Dr Coxon
please email:
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