| TITLE | STATUS | COMPLIMENTARY CLOSE |
| Mr | married or unmarried male | Yours sincerely |
| Mrs | married female | Yours sincerely |
| Miss | unmarried female | Yours sincerely |
| Ms | married or unmarried female | Yours sincerely |
| Sir | male – name not known | Yours faithfully |
| Madam | female – name not known | Yours faithfully |
| Sir/Madam | when unsure whether you are addressing male or female | Yours faithfully |
| medical/academic/military e.g. Dr/Professor/General | these titles do not change whether addressing a male or female | Yours sincerely |