British English typically does not put a period after an abbreviation. Dr, Mr, Mrs, Ms, and vs are all written without periods after them. American English puts periods after abbreviations. Dr., Mr., ...

British English is often used in formal writing, academic papers, and business correspondence within the UK and Commonwealth countries. It is also prevalent in certain fields like law and diplomacy.

Another example is with -ise and -ize endings. British English uses organise, while American prefers to organize. Both are correct depending on the region, but using one consistently is important.

Philip Gooden: "Americans have taken some British English terms. A couple of examples – “fall” as a word for autumn originated in England and went over to America with the earliest settlers.

Our new study based on the British National Corpus 2014 (BNC2014) – a 100 million-word sample of current language – shows us just how language has changed in the internet era.