ESPN has redesigned its UK and US websites and introduced a raft of new ad formats in a bid address viewability concerns among advertisers. Mitsubishi, BT and Bet365 are among the first to launch campaigns. ESPN has repositioned its display inventory, most notably the banner at the top of the page has been moved below the navigation bar in a bid to increase its effectiveness. A parallax unit -- first used on its platforms such as ESPN FC -- has been introduced. It sits within the content stream and expands as a user scrolls.