As a Brit, I have to say Steak pie (kidney too, although I personally have an irrational fear of organ meats), and Cornish Pasty. Officially, they can only be called proper Cornish pasties if they are actually created in Cornwall. No pie or pastie from outside Cornwall is actually supposed to be referred to as a Cornish pasty. When you taste the difference, you can see why. Cornish pasties are the best pies/pasties in the world, and there is no way anyone can dispute that, simply because it is an established scientific fact. I should know, I do Statistics 
Any sweet pie is good too, I have a sweet tooth...
(note that yes, I am a Cornish pasty fanboy...)
Any sweet pie is good too, I have a sweet tooth...
(note that yes, I am a Cornish pasty fanboy...)