There are even more differences in how American and Brits punctuate: Brits place commas and periods outside of quotation marks while Americans place them inside. And, British English does not add a period to abbreviations that Americans would write as “Mr., Dr., and Mrs.”

The American writing style often opts for fewer letters, while the British writing style often doubles letters or adds extra vowels. British English has many spellings that use ae or oe vowels to achieve a certain sound. American English tends to use only the e.

British English puts commas and periods (full stops) outside the quotation marks unless the quotation is also a complete sentence or the punctuation is part of the quotation.

Typically, in British English, we only use an Oxford comma when a list would be unclear without one, such as in the example sentence above. In American English, it is often standard to use an Oxford comma in lists.