First-degree relatives of people with colorectal cancer who fall into the category 2 (moderate risk) group (where a relative is diagnosed under 55 years of age or where there are multiple first-degree relatives with colorectal cancer) should be advised to see their general practitioner with a view to referral for a colonoscopy if appropriate.

All other relatives should be advised to follow the average risk guidelines, including participating in the National Bowel Cancer Screening Program.