* FTSE jumps 1.5 percent, extending gains to sixth day
* Banks benefit from U.S. earnings hopes
* Miners rally; Alcoa numbers offset China uncertainties
* Oils up; BP leads on spill containment, asset sale hopes
By Jon Hopkins
LONDON, July 13 (Reuters) - Britain's top share index was up 1.5 percent at midday on Tuesday as banks rose on hopes for second-quarter earnings, while miners rallied, and oils were led higher by BP <BP.L> on spill containment and asset sale hopes.
At 1039 GMT, the FTSE 100 <
> index was 75.15 points higher at 5,242.17, having added 0.7 percent on Monday, extending its gains into a sixth straight session."What we have generally seen over the last few days are traders betting that the U.S. earning season will be a fruitful one and are therefore cherry-picking stocks that to them may look cheap," said Giles Watts, head of equities with City Index.
Banks were the best blue chip gainers, with the sector lifted by hopes for the U.S. earnings season.
Among banks, Barclays was the best sector performer, up 3.3 percent, while Royal Bank of Scotland <RBS.L> and Lloyds Banking Group <LLOY.L> took on 2.6 and 2.4 percent, respectively.
"We have a number of important banks reporting over the remainder of the week, including JP Morgan, Citigroup and Bank of America, and I get the feeling that the buying of the banks ... has been largely with a view to heightened optimism that these will outperform," said City Index's Watt.
Metals firm Alcoa <AA.N>, the largest U.S. aluminium producer, lifted its outlook for global consumption of the metal and posted strong quarterly results after Wall Street's close on Monday. [
]Miners rallied from earlier falls, led by Eurasian Natural Resources <ENRC.L>, up 3.6 percent, and precious metals group Johnson Matthey, up 3.6 percent, as investors focused on the solid earnings from Alcoa and shrugged aside other concerns.
Reports that China will not relax tougher property measures any time soon had earlier added to worries from recent data showing the demand outlook from the world's biggest consumer of metals could be tightening.
BP BUOYANT
Integrated oils were higher led by BP <BP.L> which gained 2.6 percent, having jumped 9 percent on Monday, as a mixture of asset sale hopes, bid possibilities, and signs the Gulf of Mexico oil spill, the worst in U.S. history, could be contained pushed the stock higher.
BP said late on Monday it had installed and was ready to test a cap that, if successful, would for the first time stop the oil spewing from its ruptured well on the floor of the Gulf of Mexico. [
]BP also said on Tuesday that talks on divestments were making progress. [
]"BP is bouncing back from a very low base, of course, but the closer we get to the resolution of the spill, the greater chance there is we (will) get back to a reasonable valuation," said Henk Potts, equity strategist at Barclays Wealth.
Among the other oil blue chips, Royal Dutch Shell <RDSa.L> gained 0.5 percent, and BG Group <BG.L> added 0.2 percent as the crude price <CLc1> rallied higher.
Elsewhere with the FTSE 100 risers, food and tobacco issues were in demand led by Unilever <ULVR.L> and British American Tobacco <BATS.L>, both up 2.1 percent, as Goldman Sachs upgraded its ratings for both in a review of the European food and household products sector.
Among just a handful of blue chip fallers at midday, satellite broadcaster BSkyB <BSY.L> shed 0.1 percent, while property groups Capital Shopping Centres <CSCG.L> and British Land <BLND.L> lost 0.3 and 0.4 percent, respectively.
On the macro front, falling petrol prices pushed British inflation down for a second month running in June, but underlying price pressures rose and inflation over the quarter was higher than the Bank of England's latest forecast.
The Office for National Statistics said annual consumer price inflation fell to 3.2 percent from May's 3.4 percent after prices rose 0.1 percent on the month, as economists expected. [
] (Editing by Sharon Lindores)