Member of Parliament—Add M.P. to the usual form of address.
Minister Resident—'—— ——, Esq. [or according to rank], 'H.B.M.'s Minister Resident, ——.'
Officers in the Army and Navy—The professional is prefixed to any other rank—e.g. 'Admiral the Right Hon. the Earl of ——,' 'Lieut.-Col. Sir —— ——, K.C.B.' Officers below the rank of Captain in the Army or Commander in the Navy are more generally addressed by their social, not professional rank, followed by the name of the regiment, R.A., R.E., or R.N., as may be.
Premier—According to his rank.
Prince—If a Duke, 'His Royal Highness the Duke of ——.' If not a Duke, 'His Royal Highness Prince' [Christian name]. Begin, in either case, 'Sir.' Refer to as 'Your Royal Highness.'
Princess—If a Duchess, 'Her Royal Highness the Duchess of ——.' If not a Duchess, 'Her Royal Highness the Princess' [Christian name]. Begin: 'Madam.' Refer to as 'Your Royal Highness.'
Principal of a Scottish University—When a clergyman, 'The Very Rev. the Principal of Aberdeen,' or 'The Very Rev. Principal' [Marshall Lang].
Privy Councillor—'The Right Hon.,' followed by name or title. Begin and refer to according to rank.
QUEEN—'The Queen's Most excellent Majesty.' Begin: 'Madam,' or 'May it please your Majesty.' Otherwise, 'Lord —— presents his duty to your Majesty.' Refer to as 'Your Majesty.'
Queen's Counsel—Append Q.C. to ordinary address.