Well, Elle!
I take part in the bowel cancer tests every two years and last year they detected blood in my sample;, they retested. Same again! Had to phone the colorectal nurse who arranged the colonoscopy, quickly!
During the procedure the surgeon found two polyps which he removed for testing. That was all. He said I was fine. The polyps went to lab and were normal.
The surgeon (a helluva nice guy) told me that bowel cancer begins on polyps, so they remove all polyps as a standard procedure.
That's it for another two years!