Medical specialists – Top Doctors UK
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Mr Nish Srikantha is a leading consultant ophthalmologist based in Basingstoke and Winchester who specialises in both general ophthalmology and emergency ophthalmology, providing eye care for conditions such as retinal tears. With over 15 years’ experience, Mr Srikantha has particular expertise in cataract surgery and in the medical, laser, and surgical management of glaucoma, performing minimally invasive glaucoma surgery with iStent or Preserflo, aqueous shunt implantations, as well as trabeculectomy procedures.

Mr Srikantha, who is part of the renowned LaserVision group, consults privately at Candover Clinic and at Healthshare Clinic Winchester. He originally qualified from St George’s, University of London in 2004 and completed seven years of ophthalmology training within the Wessex region before going on to accomplish a prestigious glaucoma surgical fellowship at Moorfields Eye Hospital. Mr Srikantha was appointed as a substantive consultant ophthalmologist at Basingstoke and North Hampshire Hospital in 2019, and presently holds a consultant ophthalmic surgeon and glaucoma specialist post at Hampshire Hospitals NHS Foundation Trust, where he also runs dedicated clinics for general ophthalmology, cataracts, and glaucoma.

Beyond his highly specialised ophthalmology practice, Mr Srikantha is a prominent figure in clinical research and medical education, and has authored a number of publications in high-impact ophthalmic journals. He has a PhD from King’s College London, as well as a Higher Education Society diploma in medical teaching, and is a GMC-recognised educational supervisor for trainees. Mr Srikantha is also a fellow of the Royal College of Ophthalmologists since 2018, and a member of various recognised organisations, including The European and Eye Research Association, Glaucoma UK, and the UK and Eire Glaucoma Society.

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Dr Michael Potter is a highly experienced haematologist with over 20 years' experience as a specialist consultant in his field and practises at prominent institutions in London. He specialises in stem cell transplantation, chemotherapy, leukaemia, lymphoma, mieloma, myelodysplasia and myeloproliferative disorders and has a special interest in investigating possible blood disorders such as abnormal blood cell or platelet counts. 

Dr Michael Potter qualified with a BA/MA from Cambridge University in 1981 and a MB/BS from the London University in 1984. He then undertook his haematology training across the UK and went on to complete a PhD at the University of Bristol on the detection of minimal disease in acute lymphoblastic leukaemia in 1993. He earned his fellowship to the Royal College of Physicians in 2001.  

He is head of the transplant programmes at The Royal Marsden and The London Clinic. The transplant programme at The Royal Marsden is the largest programme in the UK, with over 200 transplants being performed annually.

He is also the programme director for the Stem Cell Transplant programme at the London Clinic, which is the only hospital that possesses a fully accredited JACIE unit in the UK. This programme is one of the largest in Europe, collecting approximately 800 annual donor collections.
 
In his role as a full-time clinician, he treats patient with chemotherapy and new agencies for a wide range of haematological malignancies and other blood conditionings. He works with a vasty experienced multidisciplinary team to provide the best care and advice in terms of diagnosis and treatment.
 
His personal feedback from patients is outstanding. He is known for communicating with patients in a friendly, clear, honest and empathic manner, as well as providing patients with a positive outlook in difficult times.
 
Dr Potter is dedicated to research which is centred on improving treatment outcomes for patients and has been widely published in over 160 peer-reviewed journals.
 
This year Dr Potter, along with his colleagues showcased world-leading blood cancer therapy at Arab Health 2023. Speaking about immunotherapy, Dr Potter states that incredibly, with this therapy doctors ‘can cure otherwise incurable cancer in groups of patients who have essentially run out of treatment options.’ He claims that up to 50 per cent of patients who have received CAR-T cell therapy are now cured.
 
Dr Potter is part of several medical organisations, including The American Society for Haematology and The European Blood and Marrow Transplant Group. He is an executive member of the British Society for Blood and Marrow Transplantation Blood and Marrow Transplant Group.
 
Suspected/confirmed cancer diagnosis only to be seen at The Royal Marsden Hospital. GP or hospital referral letter required for appointments.  All other diagnoses please enquire via The London Clinic or Mount Alvernia Hospital.

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Ms Catherine Rennie is a highly distinguished consultant ENT surgeon and consultant in rhinology based in London. She specialises in a variety of otolaryngology conditions, including nasal polyps, sinusitis, rhinitis, broken nose, and deviated septum, but also has experience in endoscopic sinus surgeries, septorhinoplasties and CSF leak repairs. Ms Rennie currently practises at Charing Cross Hospital and the healthcare centre, OneWellbeck.

After graduating from Imperial College in 2003, Ms Rennie remained in London, where she undertook her ENT specialist training in Otolaryngology on the London North Thames rotation, working with the UK’s top ENT surgeons at Charing Cross Hospital, Great Ormond Street Hospital, the Royal Free Hospital, and more. She then went on to accomplish additional training in 2016 after winning the prestigious post CCT Rhinology from the Royal College of Surgeons. During her fellowship, Ms Rennie acquired experience on advanced endoscopic sinus surgery, anterior skull base surgery and complex nasal reconstructions. Two two-week clinic oberserverships in rhinology, at Johns Hopkins and at Stanford sinus centre, gave her an international perspective.

Moved by her interest in evolving advances in rhinology, Ms Rennie took out time from her training in 2014 to complete her PhD at Imperial College. Working cross-departmental, she analysed sinonasal flow and transport: a research which led to an increased understanding of the distribution of airflow in the nasal airways and the design of precision-metered drug delivery systems.

Ms Rennie also worked through the first wave of the COVID-19 pandemic in 2020: first as an ENT surgeon in the COVID-19 tracheostomy service at Imperial College Healthcare Trust, and later as the lead researcher of a team of clinicians and designers at Mercedes-AMG Petronas F1 team. Together, they investigated ways of reducing aerosol spread of COVID-19 in hospitals, coming to co-develop the ‘Zephyr hood,’ an aerosol containment device which acts as a shield around the patient who has tested positive.

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Mr Arjuna Mahinda Imbuldeniya is an innovative consultant trauma and orthopaedic surgeon based in London. Known for his expertise in using robotic and computer technology in surgery and compassionate nature and honesty when treating patients, Mr Imbuldeniya specialises in treating your hip and knee problems, finding the quickest and safest solution with his team. He is an expert in keyhole knee surgery, knee ligament injuries, robotic-assisted knee surgery, ceramic hip replacement in young adults and 're-do' or revision hip replacement. 

Mr Imbuldeniya is a graduate of the University of London, studying and training at St Bartholomew’s and The Royal London Hospital. His postgraduate training included Kings College Hospital, Imperial College NHS Trust and Chelsea and Westminster NHS Foundation Trust, where he is now employed. He completed the renowned international hip and knee Fellowship at the Mater Hospital in Sydney, Australia - the largest joint replacement centre in the Southern Hemisphere. Here, he gained invaluable experience, learning the latest surgical techniques in hip and knee surgery. In 2018 Mr Imbuldeniya was awarded the ESSKA Sports Knee Fellowship where he travelled to Barcelona to learn new techniques in knee cartilage and ligament surgery from leaders in the field.

With his work widely published, currently active in research projects to improve care, holding several teaching positions, and well trained by international leaders in their field, Mr Imbuldeniya is the complete orthopaedic surgeon.

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Professor Prapa Kanagaratnam is a distinguished consultant cardiologist based in London. With a wealth of expertise and experience in the field, Professor Kanagaratnam has established himself as a leading authority in cardiology, particularly in the areas of angiography, echocardiogram, heart attack management, syncope evaluation, arrhythmia diagnosis, and pacemaker insertion.
 
Professor Kanagaratnam initiated his medical studies at the renowned University of Cambridge, graduating with BChir and MB degrees in 1994 and 1995 respectively. He then undertook training in cardiology and electrophysiology at the prestigious St Mary's Hospital in London. He has since cultivated an illustrious career marked by a commitment to excellence in patient care, research, and education.
 
In addition to the aforementioned treatments, Professor Kanagaratnam also sub-specialises in atrial fibrillation, electrocardiogram (ECG) interpretation, ECG monitoring, and ablation therapy  His clinical acumen is coupled with a passion for teaching and research. As a professor and supervisor for PhD students at Imperial College London, he imparts his knowledge to the next generation of medical scholars.
 
Furthermore, Professor Kanagaratnam's research pursuits are integral to his professional identity. He was awarded a PhD in 2002 and received British Cardiac Society Young Investigator Prize for his work. His investigations delve into critical areas such as atrial fibrillation, ventricular tachycardia, and the pioneering use of robotic ablation techniques.

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Dr Umasuthan Srirangalingam is a leading consultant physician in diabetes and endocrinology at Cleveland clinic London. His areas of expertise lie in treating adrenal disorders, male infertility, diabetes, hypogonadism, thyroid disorders and polycystic ovaries (PCOS).

He has an impressive history of innovating services in the NHS to facilitate in providing multidisciplinary, patient-focused care. He is currently leading services at University College London Hospital for male infertility, congenital adrenal hyperplasia and Klinefelter syndrome.

Dr Srirangalingam graduated from the University of Edinburgh before undertaking his postgraduate training in the North East Thames region and at St Bartholomew's Hospital. He later obtained an NIHR Clinical Lectureship award in endocrinology and then, in 2012, he was awarded a PhD for his commitment and research into the use of novel therapeutics to modify a hormonal action.

Dr Srirangalingam is passionately involved in clinical research and has published extensively. He is also an avid educator and recently received the 'Top Teacher' award from University College London.

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Dr Michal Trabka is a consultant urological surgeon at Medicare. He graduated with honours in medicine in 2001 and trained in Lublin, Lubartow, and Stalowa Wola before taking a substantive post in Sandomierz.
 
Dr Trabka completed his surgical and urological training in the Lubelskie and Mazowieckie regions, with further training at Community Hospital in Lubartow, Provincial Hospital in Poznan, Kolejowy Specialist Hospital in Lublin, and the Department of Urology and Urological Oncology at the Medical University in Lublin. He focused on ureteric and kidney stones, as well as laser surgeries for prostate and bladder tumours.
 
In the UK, Dr Trabka served as a specialist registrar and associate specialist at the Diana, Princess of Wales Hospital in Grimsby, North East Lincolnshire, and Ninewells Hospital in Dundee, Scotland.
 
Since moving to the Podkarpackie and Swietokrzyskie regions, Dr Trabka has built a strong reputation for minimally invasive kidney stone, bladder tumour, and prostate surgeries. He introduced advanced diagnostic and treatment techniques for prostate and bladder tumours in the region, including TURPiS 2.0, HoLEP, TURbT, and laser energy TUR.
 
Dr Trabka is the regional representative for training registrars and regularly attends medical meetings. He is an active member of the Polish and European Society of Medicine, Urology section, staying current with the latest developments in urology.

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Mr Lee Parker is a consultant foot and ankle orthopaedic surgeon at One Welbeck. He specialises in foot and ankle, ankle fractures, ankle sprains, osteoarthritis of the ankle, keyhole surgery and bunion (hallux valgus).
 
He graduated from the University of Southampton in 2002, earning a distinction in medical sciences. His medical career began with research at the University Orthopaedic Department at Southampton General Hospital. He then completed his orthopaedic training in London, including rotations at the Royal Free, Great Ormond Street, and the Royal National Orthopaedic Hospital.
 
Mr Parker received advanced fellowship training in arthroscopic ankle and hindfoot surgery at the Avon Orthopaedic Unit in Bristol. He also had the opportunity to visit specialised foot and ankle units in Switzerland, Belgium, and Spain through the European Foot and Ankle Society travelling fellowship in 2014.
 
His contributions to the field include being awarded the W.J Little Medal by the Seddon Society for his research on foot and ankle fusion. He has also published in peer-reviewed journals, authored book chapters, and co-edited a section of the EFOST surgical techniques in sports medicine series.
 
Mr Parker is actively involved in education, serving as a faculty member for courses such as the London Basic Sciences for FRCS and Queens Hospital FRCS courses. He regularly provides lectures on foot and ankle surgery to trainees, general practitioners, physiotherapists, and medical students. Additionally, he was part of the medical team that supported the 2015 Rugby World Cup in London.
 
Mr Parker is dedicated to educating patients about their foot and ankle conditions, believing that their understanding is crucial for successful treatment. His areas of expertise include disorders of the foot and ankle.

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Professor Swaran Singh is a distinguished consultant psychiatrist based in the West Midlands who specialises in youth and adult mental health. With more than 30 years of experience in the NHS, Professor Singh is internationally renowned for his specialist expertise in psychosis, schizophrenia, ethnic minority mental health and somatoform disorders alongside bipolar disorder, anxiety, depression, obsessive compulsive disorder (OCD) and post-traumatic stress (PTSD). Professor Singh currently sees private patients via e-Consultation.

Professor Singh started his professional trajectory in mental health care after witnessing the effects of ethnic conflict-related trauma on children. Having initially qualified as a surgeon, Professor Singh completed specialist training in psychiatry at the Postgraduate Institute of Medical Education and Research before relocating to the UK in 1991.

Since then, Professor Singh has been closely involved in the development of mental health services, leading three major reforms in mental health policy in the past three decades - aimed at improving aid for BAME communities, establishing early intervention programmes for psychosis, and supporting the transition between child, adolescent and adult mental health care. His research has influenced mental health policy and practice in the UK, Australia, Canada and several European countries. He has also implemented evidence-based reforms of services in the Indian subcontinent and sub-Saharan Africa.

Professor Singh was a commissioner for the Equality and Human Rights Commission (2013-19), a Commissioner for the West Midlands Combined Authority Mental Health Commission (2015-17) and Clinical Lead for the Mental Health and Social Care, West Midlands Strategic Health Authority (2007-10). Professor Singh also notably led The Singh Investigation in 2021 into alleged discrimination within the Conservative and Unionist Party.

Professor Singh is also the recipient of a National Gold Award for Clinical Excellence in the NHS. He has published over 350 scientific papers. As a leading figure in mental health care, Professor Singh is also regularly featured in the media and is invited to speak at international conferences. His work has featured on the BBC, CNN, TIME and many other major media organisations.

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Dr Georgina Rafael Vernet is a highly skilled and experienced periodontist with over eight years of experience in the field. She has received advanced education and training in implants and oral surgery, periodontology, endodontics, restorative dentistry, and facial aesthetics, making her an expert in a wide range of dental procedures. She is practising at the London-based Forest & Ray dental clinic at the moment. 

With her impressively extensive knowledge and experience, Dr Georgina provides a notably high level of dental care to her patients with a particular emphasis on patient education and comfort. She graduated from the University of Zaragoza with a degree in dentistry in 2015. Her main areas of expertise include gingivitis, receding gums, dental bone grafts, periodontal cleaning, periodontitis, wisdom tooth extraction, and gum grafting. 

Dr Vernet successfully completed a postgraduate programme at the International University of Catalonia in 2017 before obtaining a master's degree in periodontics and implantology at Cátedra IVIO-UPV de la Universitat Politècnica de València, Spain.

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