This is out of character for Marcus and so we are very concerned about his whereabouts. I urge anyone with information on where he could be to get in touch immediately.
Anyone with information can contact Thames Valley Police on 101, quoting URN 899 of 6/8.
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A-level results are out, but what should you do if your results are not quite what you had hoped for?
Nobel Peace Prize winner Malala Yousafzai is set to study at Oxford University after her A-level results secured a place.
Numbers of A-level exams awarded top grades have risen for the first time in six years, summer results show.