Where does one go for a very good sandwich in London?
Personally, I have always been partial to that sandwich shop that is in ALL the train stations (I could have swarn it was called "Upper Crust" but someone told me there is no such place (?) - then it must be Pret a Manger.)
Anyway, while doing (food) research for my upcoming trip (I am a chowhound after all!) I see there are SEVERAL places I could go.
What are the favorites? (I don't like those "mushy" sandwiches with half a jar of mayonnaise! I was served that on my first trip to London and I thought I would be sick!-Thankfully I found out they weren't ALL like that :-) )