Oscar Winner ‘20 Days in Mariupol,’ Channel 4 Triumph at British Documentary Awards admin 22 hours ago USA Update Comments Off on Oscar Winner ‘20 Days in Mariupol,’ Channel 4 Triumph at British Documentary Awards 0 Views At The Grierson Trust’s ceremony in London, Channel 4 won five awards, the highest number, followed by the BBC with three, and Netflix with two. Share Facebook Twitter Stumbleupon LinkedIn Pinterest