Before I get in to my subject I would like to state I’m not having a pop at Americans, I know a few they are nice people (apart from Donald Trump). That last sentence was a bit misleading; I don’t know Trump.
American English can cause a lot of problems for authors from the UK. I know of some getting reviews on Amazon stating their books are full of grammar and spelling mistake when in fact it’s just the difference between English and American English. I recently asked an author who sells a lot of book in the USA about this and she told me she does get the odd complaint about corn feed horses (corn being wheat and barley in the UK but corn on the cob in the USA). I have also heard of some publishers insisting books are in American English even if the author is from the UK.
At the present I have given in and am writing my book in American English. My reason being if I ever publish is more likely to sell in the USA, however there is one word I refuse to use and its mom. I don’t know why but it really irritates me, It’s a U not and O! I have been a bit cowardly and not used mum either, I’ve opted for mother, I think that is safe in both countries!
I would be very interested to hear other writer’s opinion on this.