Just curious, Kieran..... do you usually spell the verb 'practice' with a 'c'?

If you do, it looks as though my prediction is already coming true : I predict that the practise/practice distinction is going to disappear within a few years. If an IELTS writing teacher from London thinks it's fine to write the verb form with a 'c', this would suggest that we're already well on our way to merging our spellings.

However, if the italki editors 'corrected' your text, you need to complain!