Sons of a Viscount
All sons of a viscount have the courtesy title of 'The Honourable' before their forename and surname. The style of 'The Honourable' (usually abbreviated to 'The Hon') is only used on the envelope in correspondence, in written descriptions (usually only on the first mention) or in formal documents. It is never used in conversation or on invitations or on visiting cards, when the correct style is 'Mr'.
How to address the Sons of a Viscount
The recommended (social) style of address is as follows:
| Beginning of letter | Dear Mr Brown |
| End of letter | Yours sincerely |
| Envelope | The Hon John Brown |
| Verbal communication | Mr Brown (or appropriate rank if in the Services) |
| Invitation | Mr John Brown |
| Description in conversation | Mr Brown |
| List of Directors or Patrons Hon John Brown |
Hon John Brown |
| Place card | Mr John Brown |
| Legal document | John William Brown Esquire commonly called The Hon John Brown |
