Participant demographics
| Participant | Age group | Gender | Centre | Ethnic origin | Interview format | Group |
| A | 40–44 | m | Bir | Asian or Asian British—Indian | FG, Face-to-face | CONCERNED |
| B | 20–24 | f | Bir | White—British | FG, Face-to-face | CONCERNED |
| C | 50–54 | m | Bir | White—British | FG, Face-to-face | CONCERNED |
| D | 50–54 | m | Bir | Black or Black British—Caribbean | I, Face-to-face | CONCERNED |
| E | 20–24 | m | Bir | White—British | I, Face-to-face | CONFIDENT |
| F | 35–39 | m | Tau | White—British | I, Face-to-face | AMBIVALENT |
| G | 20–24 | m | Glou | White—British | I, Face-to-face | AMBIVALENT |
| H | 20–24 | m | Brist | White—British | I, Telephone | CONFIDENT |
| I | 50–54 | m | Bir | White—British | I, Telephone | CONCERNED |
| J | 20–24 | f | Wake | White—British | I, Telephone | CONFIDENT |
| K | 45–49 | f | Glou | White—British | I, Telephone | CONFIDENT |
| L | 15–19 | m | Bir | White—British | I, Telephone | AMBIVALENT |
| M | 35–39 | m | Tau | Mixed—White and Black African | I, Telephone | CONCERNED |
| N | 25–29 | f | Bir | White—British | I, Telephone | CONCERNED |
| O | 15–19 | m | Brist | White—British | I, Telephone | CONFIDENT |
FG, focus group; I, individual interview.