The Right Honourable
The Right Honourable (The Rt Hon. or Rt Hon.) is an honorific style traditionally applied to certain persons and to certain collective bodies in the post colonial empire of the United Kingdom, Canada, Australia, New Zealand, some other Commonwealth realms, the Anglophone Caribbean, Mauritius and occasionally elsewhere.
Collective entities
"The Right Honourable" is added as a prefix to the name of various collective entities such as:
The Right Honourable the Lords Spiritual and Temporal (of the United Kingdom, etc.) in Parliament Assembled (the House of Lords);
The Right Honourable the Knights, Citizens and Burgesses (of the House of Commons/Commons House) in Parliament Assembled (the House of Commons) (archaic, now simply The Honourable the Commons of the United Kingdom, etc.); and
The Right Honourable the Lords Commissioners of the Admiralty (the former Board of Admiralty)
The Right Honourable the Lords of the Committee of the Privy Council appointed for the consideration of all matters relating to Trade and Foreign Plantations (the Board of Trade)