Aug 23 (Reuters) - Britain's FTSE 100 index is seen opening down 7 points on Wednesday, according to financial bookmakers. * BHP: Global miner BHP Billiton on Wednesday unveiled a board shakeup that will see controversial director Grant King step down six months after joining the company amid concerns among investors over oil investments. * VODAFONE: Vodafone is in talks with BT's network subsidiary Openreach about a joint investment in ultrafast UK broadband, The Telegraph reported on Tuesday.(http://bit.ly/2g3KZyL) * GVC HOLDINGS: British online gambling company GVC Holdings recently held talks about a takeover of bookmaker Ladbrokes Coral but discussions ended without a deal, two sources familiar with the matter said. * OIL: Oil prices fell on Wednesday, weighed down by concerns of oversupply as Libyan output improves and as U.S. gasoline inventories rose despite the peak summer driving season. * The UK blue chip FTSE 100 index closed 0.9 percent up at 7,381.74 points on Tuesday, underpinned by mining shares and gains in almost all stocks. * For more on the factors affecting European stocks, please click on: cpurl://apps.cp./cms/?pageId=livemarkets * UK CORPORATE DIARY: NMC Health PLC Q2 2017 Earnings Release Anglo Pacific Group Half Year 2017 Earnings Release Hansteen Holdings Half Year 2017 Earnings Release WPP PLC Half Year 2017 Earnings Release Vedanta Resources Q1 Earnings Release TODAY'S UK PAPERS > Financial Times > Other business headlines Multimedia versions of Reuters Top News are now available for: * 3000 Xtra : visit http://topnews.session.rservices.com * For Top News : http://topnews.reuters.com (Reporting by Siju Varghese)