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.
More top news
How one man transformed his garden into a county-standard green for his favourite game.
Thousands of people have been celebrating a hundred years of motorbus travel in the Thames Valley.
Wiltshire Police say they've 'worked tirelessly' to establish Ted Heath abuse claims