The number of level 2, level 3 and the overall total number of accredited CTCA practitioners in the UK as a whole and each devolved nation in 2015 compared with the estimated CTCA provision required for full implementation of the updated NICE guidelines
| Geographical location | Population (millions) | Level 2 practitioners | Level 3 practitioners | Total level 2 and level 3 practitioners | CTCA provision required versus practitioners | ||
| Number | Number | Number | Per million population | CTCAs required | CTCAs per accredited practitioner | ||
| UK | 64.2 | 169 | 29 | 198 | 3 | 350 000 | 1768 |
| England | 54.1 | 144 | 25 | 169 | 3 | 295 030 | 1746 |
| Scotland | 5.3 | 19 | 3 | 22 | 4 | 28 630 | 1301 |
| Wales | 3 | 3 | 0 | 3 | 1 | 16 251 | 5417 |
| Northern Ireland | 1.8 | 3 | 1 | 4 | 2 | 10 089 | 2522 |
CTCA, CT coronary angiography; NICE, National Institute for Health and Care Excellence.