Should you use UK or US spelling? Check the journal’s Instructions for Authors to find out which spelling the journal requires. In many cases the journal will accept either form, just remember to be consistent with the spellings throughout your manuscript.
TIP: Microsoft Word can help you with correct spellings. Simply open your Language preferences and chose either UK or US spelling and ensure “checking spelling as you type” is selected. Misspelled words should now be underlined in red and can be corrected.