The FTSE 100 has ended the day slightly down by 3 points, or 0.05%, to 5,957.8, after Partygaming plummeted almost 60%.
The online gaming firm dropped 57.94%, or 62p, to end the day at just 45p a share, after it said it is considering suspending its US business following the unexpected approval of the Unlawful Internet Gambling Enforcement Act of 2006 by US Congress.
Rival gaming firms have also been hit with 888 down 26.11% to 108.25p, after it already suspended its US business, while Sportingbet slipped 64.18% to 66p, after it announced it has ended bid discussions with World Gaming, which dropped 75.98% to 15.25p.
Mining firms did their best to keep the FTSE afloat, with Vedanta Resources posting the biggest gains with a rise of 4.47% to £12.15, while Anglo American added 2.69% to £22.93.
But although Kelda Group also climbed 3.76% to 882.5p, and Severn Trent added 2.02% to £13.63, insurer Prudential helped keep the FTSE in the red with a drop of 3.32% to 641.5p, while Old Mutual slipped 2.24% to 163.75p.
In the US the Dow Jones Industrial Average is up 21.77 points, or 0.19%, to 11,700.84, as weaker-than-expected manufacturing data suggested to investors the Federal Reserve will not raise interest rates.
Hewlett Packard has posted the biggest gains so far with a rise of 1.99% to $37.42, closely followed by United Technologies which is up 1.56% to $64.34, while General Motors is up 1.26% to $33.68.
McDonalds is also doing well with a rise of 1.05% to $39.53, closely followed by Boeing which has climbed 0.95% to $79.60, although gains are being limited by AT&T which is down 0.83% to 432.29, while American International Group is down 0.36% to $66.02.
However Wal-Mart is currently the biggest drag on the index with a drop of 1.56% to $48.55, after it estimated sales last month rose 1.8%, at the low-end of its forecast, while American Express is also down 1.16% to $55.43 and 3M Company has dropped 0.87% to $73.77.IFAonline
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