It's a British English vs American English thing. https://en.wikipedia.org/wiki/American_and_British_English_grammatical_differences#Subject%E2%80%93verb_agre

It's a British English vs American English thing. https://en.wikipedia.org/wiki/American_and_British_English_grammatical_differences#Subject%E2%80%93verb_agreement https://en.wikipedia.org/wiki/American_and_British_English_g...