We use British English spelling when writing the questions for each test. However, we do not specifically test for British words or meanings e.g. 'newsagent'. You will not be marked down if you use American spellings when doing the Writing test.
All of the EnglishScore tests use a range of different accents as you would experience in real-life, particularly in the global workplace. The accents are clear and understandable, and do not require knowledge or experience of particular accents to be understood.