The FTSE 100 has ended the day up 32.1 points, or 0.52%, to 6,214.6 to hit a new five and half year high.
Tate & Lyle posted the biggest gains with a rise of 3.76% to 801p, after it said it was considering the full or partial disposal of its European starch operations, while Gallaher Group gained 3.15% to 884.5p.
Miner Vedanta Resources has climbed 3.47% to £14.32, while British American Tobacco gained 2.49% to £14.82, and Wolseley added 2.15% to £12.38, although gains were limited by British Sky broadcasting which slipped 1.89% to 545.5p.
Amvescap was the biggest drag on the index with a fall of 4.32% to 598p, after posting its third quarter results, while insurers also slumped led by Friends Provident which slipped 1.66% to 192.75p, while Aviva fell 1.25% to 792p and Legal & General dropped 1.22% to 142.25p.
In the US, the Dow Jones Industrial Average is down 27.54 points, or 0.23%, to 12,100.34, as investors are cautious ahead of an interest rate decision by the Federal Reserve.
General Motors is the biggest drag on the index with a drop of 3.92% to $34.77, closely followed by Boeing which is down 2.98% to $81.10, while AT&T has slipped 1.15% to $34.33.
Hewlett-Packard is also down 0.91% to $39.08, closely followed by McDonalds which is down 0.69% to $41.96, although losses are being limited by Exxon Mobil which is up 0.49% to $70.23.
Altria Group is posting the biggest gains so far with a rise of 1.39% to $80.93, closely followed by Caterpillar which has climbed 0.98% to $61.53, while Alcoa has added 0.83% to $27.94, and Intel has gained 0.56% to $21.75.IFAonline
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