The PAINT study has recruited 15 sites across the United Kingdom:
Below is a table containing the name and recruiting status of each site:
| Site name | Recruitment Status |
|---|---|
| Belfast | Not yet recruiting |
| Blackburn | Not yet recruiting |
| Bristol | Not yet recruiting |
| Colchester | Not yet Recruiting |
| Frimley Park | Not yet recruiting |
| Gloucestershire Royal Hospital | Not yet recruiting |
| Kings College London | Not yet recruiting |
| Liverpool | Not yet recruiting |
| London | Not yet recruiting |
| Manchester | Not yet recruiting |
| Moorfields | Not yet recruiting |
| Oxford | Not yet recruiting |
| Sheffield | Not yet recruiting |
| Southampton | Not yet recruiting |
| York | Not yet recruiting |