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LONDON, Aug 20 (Reuters) - Britain's FTSE 100 index is seen opening slightly lower on Thursday, with futures trading down 0.5 percent. For more on the factors affecting European stocks, please click on
The UK blue chip index closed down 122.84 points, or 1.9 percent, to 6,403.45 points on Wednesday, its lowest level since January.
GVC Holdings is prepared to increase its offer for Bwin to nearly 1.1 billion pounds to secure a takeover of its rival, UK newspaper The Times reported.
Premier Oil PMO.L has renegotiated debt covenants with banks and bondholders to mid-2017 to give it more headroom to deal with weak oil prices, the company said on Thursday.
The UK lender reported a near trebling of its losses in the first half of 2015, reflecting reduced income, losses on the sale of assets and an increase in costs.
Kazakh copper producer Kaz Minerals posted a 55 percent drop in first-half earnings on Thursday following a drop in commodity prices, and said it would not pay an interim dividend.
Kum Hon Tung has tendered his resignation as executive director, CFO and acting CEO to pursue other career opportunities.
WOrkers employed by Almar Investments are currently on a strike, International Ferro Metals said, and the company's furnaces have had to intermittently reduce production.
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> Other business headlines Multimedia versions of Reuters Top News are now available for: * 3000 Xtra : visit topnews.session.rservices.com * BridgeStation: view story .134 For more information on Top News visit topnews.reuters.com (Reporting by Lionel Laurent and Alistair Smout)