Colonoscopy activity levels and site participation by nation
| UK | England | Northern Ireland | Scotland | Wales | |
| Colonoscopies | 20 085 | 16 043 | 780 | 2564 | 698 |
| Population | 62 400 000 | 52 000 000 | 1 900 000 | 5 500 000 | 3 000 000 |
| Rate/100 000 | 32.2 | 30.9 | 41.1 | 46.8 | 23.3 |
| Sites identified | 302 | 236 | 17 | 31 | 18 |
| Sites registration complete | 302 | 236 | 17 | 31 | 18 |
| Sites participated in Phase II | 302 | 236 | 17 | 31 | 18 |
| Colonoscopists | 2681 | 2163 | 99 | 290 | 129 |