I'm from Massachusetts in the US. State law says that any city or town ending in -borough is legally allowed to be spelled with just -boro. So, for example, you'll usually see exit signs on the highway (I don't know if British people know what "exit signs" and "highway" are. You guys may well have your own terms for these, sorry I don't know what they are) that say something like "Marlboro 1/2 mile." But usually the sign for entering town will say, "Entering Marlborough." Pretty amusing.
Also, if you think Americans are being cheap for taking out some of the extra letters, I'll have you know that people in some parts of the US actually still say some of them! The dialect is dying out a bit, but if you speak to an old person from deep in the southern mountains (Eastern Kentucky, Western North Carolina, etc . . . ) they pronounce the l's in words like talk, walk, could, would, etc . . . Pretty bizarre. I think they maintain some other elements of Elizabethan-era English that died out in virtually every other accent in the English-speaking world. Unfortunately, I don't know what those are. Many of the best places to find preserved examples of older sounds of English are actually in isolated parts of America. For example, check out this video of people from Tangier Island, VA: