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
Icy patches remain on unsalted roads and police warn drivers they face on the spot fines if they don't clear snow from their cars.
Holly has the latest forecast for the east of the region.
Holly has the latest weather forecast for the west of the region.