NCT03326713; clinicaltrials.gov.

This study demonstrates wide variability within primary care, in the appropriate use of colorectal cancer referral guidelines. General practices should be targeted for education.

A dedicated referral protocol addressing all colorectal symptoms would significantly improve the overall yield of colorectal cancers through the TWW route and reduce delays in patient pathways with 'straight to test' in secondary care.

Tendency to FTA is habitual. Care needs to be exercised in the management of FTAs to avoid delayed presentation of colorectal cancer.