[Skip to content]

Search our Site
Doctor Internet

Find a doctor, dentist, clinic, hospital or health care provider abroad:


Timothy Perren: Consultant Medical Oncologist and Cancer Specialist, Leeds

Timothy Perren
Timothy Perren: Consultant Medical Oncologist, Leeds

Professor Timothy Perren is Professor of Oncology and Women’s Cancers, University of Leeds and Honorary Consultant Medical Oncologist, Leeds Teaching Hospitals NHS Trust. He provides private cancer treatment both for newly diagnosed patients and those with recurrent or metastatic conditions at Spire Leeds Hospital and at Nova Healthcare, a specialist unit based within St James's Institute of Oncology, Leeds.

He is a consultant medical oncologist specialising in the non-surgical treatment of cancers using chemotherapy, hormonal therapy and the new molecular therapies such as Herceptin (trastuzumab), Perjeta (pertuzumab), Kadcyla (trastuzumab), Tyveb (lapatinib), Avastin (bevacizumab) and Lynparza (olaparib). 

View this page in Arabic

Modern treatment for cancer requires the careful integration of diagnostic procedures, surgical treatment, medical therapies, and radiotherapy. This is brought about through a multidisciplinary team approach where pathologists, radiologists, oncologists, surgeons, and specialist nurses meet on a regular basis to consider the diagnosis and optimal treatment for individual patients.

Professor Perren is a member of the multidisciplinary team for breast cancer, at the Leeds Cancer Centre which is based at the St James’s Institute of Oncology within the Leeds Teaching Hospitals NHS Trust.

Professor Perren works with the same team of surgeons, radiologists, and pathologists in the private sector as he does in the NHS.

Modern cancer treatment is increasingly becoming tailored to the individual patient and their particular cancer through careful analysis of the nature and extent of the disease together with information regarding certain biological and molecular features exhibited by the cancer. So one patient with, say breast cancer, will not necessarily need to have the same treatment as another patient who apparently has the same disease. 

Oncologists are involved at all stages in the pathway of care, and today, where appropriate, chemotherapy or hormonal therapy may be used as the initial form of treatment. 

Professor Perren qualified from Charing Cross Hospital Medical School in London in 1978. He subsequently trained in general medicine in London and in Stoke on Trent. His oncology training was in Birmingham and at the Royal Marsden Hospital. His MD thesis was concerned with the identification of prognostic factors in breast cancer. He was appointed consultant medical oncologist at St James's Hospital in Leeds in January 1990 and to the Chair of Women’s Cancers and Oncology at the University of Leeds in 2013.

He is a fellow of the Royal College of Physicians of London, a member of the Association of Cancer Physicians, the American Society of Clinical Oncology, the European Society of Medical Oncology, the Yorkshire Cancer Network Breast Group and the Yorkshire Cancer Network Gynaecology Group. He is a past Chair and member of the Joint Speciality Committee for Medical Oncology at the Royal College of Physicians of London as well as of the Joint Collegiate Council for Oncology. He proposed the NCEPOD investigation into deaths within 30 days of chemotherapy administration, which has led to wholesale changes in the planning and administration of chemotherapy services in the UK.

Specialist cancer expertise and treatments offered

Professor Perren has many years of expertise in chemotherapy, targeted molecular therapy and hormonal therapy for breast cancer (in men as well as in women) and gynaecological cancers. Gynaecological cancers include, ovarian cancer; primary peritoneal cancer – a condition which is often confused with ovarian cancer; ovarian germ cell tumours (often known as ovarian teratomas or yolk sac tumours); fallopian tube cancer; endometrial cancer (cancer of the lining of the womb); cervix or cervical cancer, vaginal cancer; vulval cancer. There are a number of rarer gynaecological malignancies such as carcinosarcomas (sometimes known as mixed Mullarian tumour), or various other forms of sarcoma which can affect either the ovary or the endometrium.

Professor Perren has expertise in treating patients with both newly diagnosed early cancer, and cancer which has recurred after previous treatments. On occasions patients are diagnosed with advanced cancer and it is not clear which organ the cancer has developed from; this is known as cancer of unknown primary site. Professor Perren, with his colleagues in diagnostic radiology and pathology, are very familiar with the appropriate investigation of this form of cancer so that optimal treatments may be offered.

Clinical interests in cancer treatment

  • Targeted molecular therapies at all stages of cancer care
  • Breast cancer
  • Chemotherapy treatment for ovarian cancer
  • Gynaecological cancer
  • Chemotherapy
  • Hormonal therapy
  • Oncology
  • Cervix cancer
  • Endometrial cancer
  • Molecular therapy
  • Clinical trials 

Research interests

  • Development of new and better medical treatments for breast and gynaecological cancer 

Through his NHS practice, Professor Perren is involved in many research trials investigating the integration of new treatments into cancer care. It is of course only through the recruitment of patients into well designed clinical trials and studies that progress can be made into the treatment of cancer. Therefore, clinical trials are central to modern cancer care.

He is chief investigator on the influential ICON7 trial published in the New England Journal of Medicine in 2011 which has led to the integration of bevicizumab into standard first treatment for ovarian cancer. He is also authored or co-authored in more than a 100 other research papers, book chapters and abstracts. Read more of his current publication profile here.

In April 2015 his RG score (calculated based on the publication profile and how other researchers interact with it) within ResearchGate was 40.90 which is higher than 97.5% of ResearchGate members.

He is regularly approached to present his work at International meetings. 

Where can I get cancer treatment?

NHS treatment

Dr Perren is Consultant Medical Oncologist at the St James’s Institute of Oncology in Leeds, West Yorkshire. This is based with the newly developed Bexley Wing at St James’s University Hospital, part of the Leeds Teaching Hospitals NHS Trust.

St James's Institute of Oncology

Beckett Street


LS9 7TF 

Tel: 0113 206 8938   

Fax: 0113 206 7438

Email: julie.milner@nhs.net  


Website: www.leedsth.nhs.uk

Private treatment 


Spire Leeds Hospital

This is a well established private hospital located in beautiful landscaped grounds in Roundhay in North Leeds. The hospital has a resident medical officer and offers inpatient, outpatient, and day case facilities. There is a team of specialist chemotherapy nurses and a purpose-built dedicated day case chemotherapy unit will open in September 2009. Modern comprehensive imaging is also available on site. Currently most of Dr Perren’s consultations and treatments are carried out here.

Nova Healthcare, St James’s Institute of Oncology

This is a newly established unit based within the newly opened state-of-the-art Cancer Centre in the Bexley Wing at St James’s. The unit currently offers consultation suites, the private radiotherapy service for West Yorkshire, and a newly developed Gamma Knife Centre. Services for chemotherapy and clinical trials will be developed during 2009/10. Consultations can be arranged as required within the Nova Oncology Unit.


Spire Leeds Hospital

Roundhay Hall

Jackson Avenue




Nova Healthcare

Bexley Wing

St James's Institute of Oncology

Beckett Street



Tel: 0113 218 5908/9

Oncology tel: 0113 218 5950

Oncology fax: 0113 218 5958

Personal Assistant email:  jennifer.perren@me.com 

Personal email:  timothy.perren@spirehealthcare.com  

Web: www.spirehealthcare.com

Tel: 0113 206 7735

Email: contact@novahealthcare.co.uk

Web: www.novahealthcare.co.uk

GMC Number: 2446833

Date of registration: 25/03/80

Check this doctor’s GMC registration


Spire Leeds Hospital - Timothy Perren: Consultant Medical Oncologist and Cancer Specialist, Leeds
Spire Leeds Hospital
St James's Institute of Oncology - Timothy Perren: Consultant Medical Oncologist and Cancer Specialist, Leeds
St James's Institute of Oncology
View this page in Arabic

Intuition Communication Ltd bears no responsibility for information published on this website, which concerns or relates to advertisers and their products and services. Read Disclaimer in full.