Well I still seen to get the spell checker flicking to English US when spell checking a message. Must be something to do with my Office 2016. I Checked on Google and it says go to the review tab and change the default language but I don't seem to get a review tab for some odd reason.
******************************************************************************************************************** This message may contain confidential information. If you are not the intended recipient please inform the sender that you have received the message in error before deleting it. Please do not disclose, copy or distribute information in this e-mail or take any action in relation to its contents. To do so is strictly prohibited and may be unlawful. Thank you for your co-operation. NHSmail is the secure email and directory service available for all NHS staff in England and Scotland. NHSmail is approved for exchanging patient data and other sensitive information with NHSmail and other accredited email services. For more information and to find out how you can switch, https://portal.nhs.net/help/joiningnhsmail For answers to frequently asked questions about this list visit: http://www.jaws-users.com/help/
