Mr Tet Yap

Consultant Andrological Surgeon

Mr Tet Yap is a consultant andrological surgeon and a Reader in Urology. He qualified from Cambridge in 2000 and trained in Surgery & Urology in the North Thames region including at University College London (where he completed his research MD), Charing Cross Hospital, Great Ormond Street Hospital for Children and St Bartholomews Hospital, winning numerous awards and prizes for his research and surgical work.

He has been involved in the setting up of the complex benign andrological service at St George’s Hospital and led the development of a South West London regional male fertility unit as well as the andrological services at the Royal Marsden. He is now based at Guys and St Thomas’ NHS Foundation Trust where he continues spearheading regional andrological and male infertility services and research, including leading the world’s first multidisciplinary clinic specifically dedicated to Klinefelter syndrome.

He is part of a world-leading male infertility service based at 18 Devonshire Street, the Princess Grace Hospital and the Lister Hospital in Chelsea, where he is the joint fertility MDT chair. He is also a respected male infertility commentator, appearing in the national and international press, as is the chair of the European Reference Network section on Male Fertility.

Professional memberships
Clinical interests

Male infertility (including oncofertility) / andrology

Complex erectile dysfunction

Reconstructive genital surgery

Urological Oncology

Implant surgery

Penile prosthesis

Penile curvature

Secretary details


0207 034 5032

18 Devonshire Street, London W1G 7AF

Research papers

The semen microbiome and its impact on sperm function and male fertility: A systematic review and meta-analysis

Gender Identity and Questioning in Klinefelter's Syndrome

Detailing Sexual Outcomes After Focal Therapy for Localised Prostate Cancer

Identifying the differential effects of sperm DNA fragmentation on the reproductive cycle in couples undergoing IVF and ICSI

Get in touch


Get in Touch

Use the secure form to send a message regarding any concerns you may have. Should you have any information regarding a referral from a GP please also include this and we will be in touch with next steps.

18 Devonshire Street, London W1G 7AF

We use cookies on this site to enhance your user experience. For more information, please see our privacy policy.