Endoscopy centres and their participants’ roles
| Participant | Site ID | Independent endoscopy experience (years) | Professional background | Further BCSP accreditation |
| P1 | 1 | 5–15 | Gastroenterology | BCSP |
| P2 | 1 | <5 | Nursing | |
| P3 | 1 | 5–15 | Gastroenterology | |
| P4 | 1 | <5 | Colorectal surgery | |
| P5 | 2 | >15 | Gastroenterology | BCSP |
| P6 | 2 | >15 | Gastroenterology | BCSP |
| P7 | 2 | >15 | Nursing | BCSP |
| P8 | 2 | <5 | Colorectal surgery | |
| P9 | 3 | 5–15 | Gastroenterology | |
| P10 | 3 | 5–15 | Nursing | |
| P11 | 3 | <5 | Colorectal surgery | |
| P12 | 3 | 5–15 | Nursing | |
| P13 | 4 | 5–15 | Gastroenterology | |
| P14 | 5 | >15 | Nursing | BCSP |
| P15 | 4 | <5 | Gastroenterology | |
| P16 | 5 | <5 | Nursing | |
| P17 | 1 | <5 | Gastroenterology (trainee) | |
| P18 | 6 | <5 | Gastroenterology (trainee) | |
| P19 | 6 | >15 | Colorectal surgery |
BCSP, bowel cancer screening programme accredited endoscopist.