Pass mark: 50

But a pass is a pass, and that is all that matters :-) There is little point in asking for a review. I have never known anyones marks to be changed by a review (and because your mark was marginal, your paper will have already been marked three times including by the examiner himself). All they do with a review is check that the marks have been recorded correctly. Congratulations on passing - be happy :-)

Thank you very much! Your video lectures helped a lot! My December mark was 29 and after that I watched all your lectures twice and it worked!

You are welcome, and thank you for your comment :-)