Secretary of State—'Her Majesty's Principal Secretary of State for the —— Department.'
Serjeant-at-Law—'Serjeant ——,' or 'Mr Serjeant ——.'
Sheriff of London—'The Right Worshipful.'
Vice-Chancellor—As a Judge. Begin: 'Sir.' Address on the bench as 'My Lord.'
Viscount—'The Right Hon. the Lord Viscount ——,' or 'The Lord Viscount ——.' Begin: 'My Lord.' Refer to as 'Your Lordship.'
Viscountess—'The Right Hon. the Viscountess ——,' or 'The Viscountess ——.' Begin: 'Madam.' Refer to as 'Your Ladyship.'
Viscount's Daughter, Son, and Son's Wife—As Baron's daughter, son, and son's wife.
In correspondence with equals or personal friends letters are begun less formally—e.g., 'My dear Lord,' 'Dear Lord ——,' 'Dear Sir James.' We are less ceremonious than our ancestors a few generations ago, when letters to the nearest relatives and most intimate friends were begun and ended in the most formal manner. Designations like 'Mrs General ——,' 'Mrs Captain ——,' 'Mrs Dr ——,' which were fifty years ago not uncommon, were always improper. Persons holding offices other than those enumerated are addressed in the usual form, 'Sir,' 'Dear Sir,' or 'My dear Sir,' according to the more or less formal terms on which the writer may be with his correspondent. A firm is addressed 'Gentlemen' or 'Dear Sirs.'