Proper Address/Substantive Peers

Royalty

Position	On envelopes	Salutation in letter	Oral address
King	HM The King	Your Majesty	Your Majesty, and thenceforward as "Sir/Sire"
Queen	HM The Queen	Your Majesty	Your Majesty, and thenceforward as "Ma'am"
Prince	HRH The Prince of [Realm]	Your Royal Highness	Your Royal Highness, and thenceforward as "Sir"

Nobility

Peers and Peeresses

Position	On envelopes	Salutation in letter	Oral address
Duke	His Grace The Duke of [Region]	My Lord Duke or Dear Duke (of [Region])	Your Grace or Duke
Duchess	Her Grace The Duchess of [Region]	Madam or Dear Duchess (of [Region])	Your Grace or Duchess
Marquis	The Most Hon. The Marquis of [Region]	My Lord Marquis or Dear Lord [Region]	My Lord or Lord [Region]
Marchioness	The Most Hon. The Marchioness of [Region]	Madam or Dear Lady [Region]	My Lady or Lady [Region]
Earl	The Rt Hon. The Earl of [Region]	My Lord or Dear Lord [Region]	My Lord or Lord [Region]
Countess	The Rt Hon. The Countess of [Region]	Madam or Dear Lady [Region]	My Lady (- doubtful) or Lady [Region]
Viscount	The Rt Hon. The Viscount [Region]	My Lord or Dear Lord [Region]	My Lord or Lord [Region]
Viscountess	The Rt Hon. The Viscountess [Region]	Madam or Dear Lady [Region]	My Lady or Lady [Region]
Baron	The Rt Hon. The Lord [Region]	My Lord or Dear Lord [Region]	My Lord or Lord [Region]
Baroness	The Rt Hon. The Lady [Region] or The Rt Hon. The Baroness [Region]	Madam or Dear Lady [Region] or Dear Baroness [Region]	My Lady or Lady [Region] or Baroness [Region]
Lord of Parliament	The Rt Hon. The Lord [Region]	My Lord or Dear Lord [Region]	My Lord or Lord [Region]
Lady of Parliament	The Rt Hon. The Lady [Region] or The Rt Hon. The Baroness [Region]	Madam or Dear Lady [Region] or Dear Baroness [Region]	My Lady or Lady [Region] or Baroness [Region]

Gentry

Knights

Position	On envelopes	Salutation in letter	Oral address
Knight	Sir [Firstname Lastname]	Sir or Dear Sir [Firstname (Lastname)]	Sir or Sir [Firstname]
Dame	Dame [Firstname Lastname]	Madam or Dear Dame [Firstname (Lastname)]	Madam or Dame [Firstname]

Clergy

Position	On envelopes	Salutation in letter	Oral address
Priest	The Rev. [Firstname Lastname] or Father [Firstname Lastname]	Dear Mr/Mrs/Ms/Father [Lastname]	Mr/Mrs/Ms [Lastname] or Father [Firstname (Lastname)] or Vicar/Rector/Curate/Chaplain [Religion] (- doubtful)