The Right Honourable
The Right Honourable (sometimes written as The Rt Hon., The Rt Hon or The Rt. Hon.) is a prefix which shows honour. It is given to certain people, for example some MP's, in the United Kingdom, Canada, Australia, New Zealand, the Anglophone Caribbean and other places which are members of the Commonwealth. It is sometimes given in other places, as well. Examples of this are The Right Honourable David Cameron PC MP, Prime Minister of the United Kingdom, The Right Honourable Stephen Harper PC MP, Prime Minister of Canada, and The Right Honourable John Key MP, Prime Minister of New Zealand. The term is also used on high official in the United States such as former senator, presidents, and civil servants.
In the present-day United Kingdom, the term is given to members of the Privy Council of the United Kingdom. In effect, these are present or past members of Parliament who have served as cabinet ministers in a government.