The FTSE 100 Index gained 39 points, or 0.7%, to 5,897 points today, led by the financial and telecoms sectors.
HSBC climbed 1.49% to 989.50p after it reported an 11% rise in pre-tax profit to £11.5bn last year, but cautioned the longer term outlook remains more uncertain.
Aviva rallied 2.34% higher at 830p as Lehman Brothers added the UK insurer to its European Recommended portfolio with "overweight" advice and 820p target price.
Vodafone gained 2.88% to 125p after it confirmed it had earmarked its Japanese arm, Vodafone KK, for disposal and Citigroup upgraded the shares to "buy" from "hold".
And BT rose 5.10% to 231.75p after renewed reports a consortium of private equity groups is considering bidding for the group.
In the US, the Dow Jones industrial average is down 5.12 points, or 0.05%, at 11,016.47 points as shares of energy companies slip on a decline in crude.
ConocoPhilips is down 2% to $61.21, while oil services firm Schlumberger has fallen 1.3% to $120.60.
Meanwhile, struggling General Motors has risen 3.1% to $19.79 after it said it would sell a 17.4% equity stake in Japan's Suzuki Motor for an estimated $2bn.IFAonline
Despite improved risk appetite
FOS award limit increase
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Ceremony will take place 13 November