The FTSE 100 Index has risen 22.90 points, or 0.4%, to 5,904 points this morning, led by Cadbury.
Cadbury has gained 3.07% to 537p on news it expects to deliver revenue growth at the upper end of its goal range. Revenue for first half rose to £3.41bn from £2.78bn, while pre-tax profit rose to £398m from £302m.
Building materials group Hanson has advanced 1.15% to 662p. It managed to lift profits in the first half, up 12.4% to £193.6m, after it raised prices during the period to combat rising input costs.
Xstrata, which is bidding for Canadian miner Falconbridge, has slipped 1.40% to 2,258p despite posting a 42% surge in first-half profit, helped by strong metal prices and increased volumes.
Lloyds TSB has fallen 1.31% to 527p after it reported a modest increase in profits for the first half and said it was seeing a further deterioration in bad debts.
In Japan, the Nikkei 225 Stock Average gained 23.38 points, or 0.15%, to 15,464.29 points.
Advantest gained 90 yen, or 0.83%, to 10,970 yen and Daiichi Sankyo rose 80 yen, or 2.48%, to 3,310 yen.
Exporters fell on concerns about US interest rates. Canon declined 30 yen, or 0.55%, to 5,420 yen, Nikon lost 20 yen, or 0.99%, to 2,005 yen and Toyota Motor dropped 30 yen, or 0.50%, to 5,960 yen.
In the US, the Dow Jones industrial average fell 59.95 points, or 0.54%, to 11,125.73 points on expectations the Federal Reserve will increase interest rates.
Caterpillar fell 1.6% to $69.71 and Alcoa declined 2.2% to $29.29.
General Motors dropped 2.9% to $31.30 after it said July sales declined 19.1%.
Brinker International fell 2.1% to $31.72 and Applebee's International dropped 2.3% to $17.35.IFAonline
Two global vehicles
'Further plug advice gap'
Must appoint separate CEOs and boards
Advisers do come out well
Will report to Mark Till