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

Click the button below for translations of this video

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.

Screening Services Provided by the Bowel Cancer Screening Centre​​​

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.
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The Bowel Scope Screening Test is Suspended

Under guidance from the National Bowel Cancer Screening Programme, St Mark’s Bowel Cancer Screening Centre suspended bowel scope screening due to the COVID pandemic in March. At that time we hoped to be in a position to resume this service and offer appointments. 

More information about Bowel Scope Screening Test Suspension

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 60-74. 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

If your FIT kit test is positive you will be invited to attend a Specialist Screening Practitioner assessment. This assessment will, where possible, be by video using the Attend Anywhere App.




If an Attend Anywhere video assessment is not appropriate you will be invited to a face to face assessment.


If your appointment is face to face it 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. 


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

Parking & Directions

View directions here

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