[PeterPrinciple]

Churchill Refuses Knighthood Honor

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He is not a alone. But it has been diluted much in lately?

https://en.wikipedia.org/wiki/Declining_a_British_honour

Info on the order of the garter which Churchill declined:

https://en.wikipedia.org/wiki/Order_of_the_Garter

Here is info on British honors:
https://en.wikipedia.org/wiki/Orders,_decorations,_and_medals_of_the_United_Kingdom

[PeterPrinciple]

But he is knighted in 1953:

http://www.history.com/this-day-in-history/churchill-knighted