Bowel Cancer Screening

Professor Siwan Thomas-Gibson introduces new  patient information about the measures we are taking to keep both you and staff safe during your visit to the bowel cancer screening centre

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Watch Professor Brian Saunders, Director of Bowel Cancer Screening, give a brief overview of bowel cancer screening services at St Mark's Hospital.

Professor Siwan Thomas-Gibson, Deputy Director for Bowel Cancer Screening, talks about the benefits of screening and a new, simpler home-test kit called 'FIT' - Faecal Immunochemical Test.

It’s natural to be curious about the test. See what people who have recently had the Bowel Scope Screening test have to say about it afterwards.

Screening services provided by the Bowel Cancer Screening Centre include:
FIT Postal Screening: a quick and easy Bowel Cancer detection test for everyone aged 60 to 74 that is sent every two years which you return in the post.
The Bowel Scope Screening Test

In your 50s your chance of getting bowel cancer increases. However, there is a simple test that can reduce the risk dramatically.  It’s quick, easy and you only do it once, and it could be a lifesaver.

The bowel scope screening test involves a procedure called Flexible Sigmoidoscopy, which uses a thin, flexible tube with a camera to examine your lower bowel.

If you’re reading this you’ve probably received an invitation to take the test at the Bowel Cancer Screening centre at St Mark’s Hospital

Bowel Cancer

Bowel cancer is the UK’s fourth most common cancer and the second leading cause of cancer deaths. More than 41,000 people are diagnosed and nearly 16,000 die from bowel cancer each year.

Also known as colorectal cancer, bowel cancer refers to tumours in the part of your gut called the large intestine or large bowel.


Most people who get bowel cancer are aged over 60. We test for polyps between the ages of 55 - 59. By detecting and removing polyps before they can become cancerous we can reduce your risk of getting bowel cancer by half.


Your appointment is important

Appointments are limited and by invitation only. If you have received a letter asking you to book your appointment, please call now on 0800 707 6060.


Your test will be carried out at St Mark’s, Northwick Park Hospital, Watford Road, Harrow, Middlesex HA1 3UJ. It is five minutes from the Northwick Park tube station on the Metropolitan Line.

For parking and directions by Road, Rail and Bus, please see our Parking and Directions page, below. 

Nurse Consultant Margaret Vance explains why the test is important when you reach aged 55 or over

"Most bowel cancers develop from small fleshy nodules called polyps. By offering you a bowel screening at age 55 we can look inside the bowel in a quick test to see if you have a polyp. And if you do, we can remove it. It’s quick and painless and reduces your chance of getting bowel cancer."


National Bowel Screening Hub Helpline: 0800 707 6060 to order a home-test kit, book an appointment, and general inquiries about bowel screening. Open 9am to 5pm.

St. Mark's Bowel Screening Health Promotion: 020 8869 3376 to speak to the Health Promotion team to arrange a talk, training session or raise awareness

St Mark's Hospital website


St Mark’s Hospital
Watford Road
Harrow HA1 3UJ

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