* U.S. mortgage plan eases investor jitters
* Energy stocks up as crude steadies
* Banks gain; LSE rises on new CEO
By Simon Falush
LONDON, 13 Feb (Reuters) - Britain's top share index gained 1.1 percent by midday on Friday as hopes for a U.S. plan to subsidise mortgage payments eased investor anxiety about banks, while energy stocks rose on an improved demand outlook.
By 1136 GMT, the FTSE 100 <
> had gained 44.93 points to 4,247.17 after falling 0.8 percent the previous session but the index is still down 4.3 percent on the year having slipped 31 percent in 2008.The Obama administration is hammering out a programme to subsidise U.S. mortgages in a new front to fight the credit crisis, sources familiar with the plan told Reuters on Thursday, boosting financial markets.
Banks were strong gainers. Barclays <BARC.L>, HSBC <HSBA.L> and Royal Bank of Scotland <RBS.L> added between 3.3 percent and 5.8 percent.
However, analysts were sceptical about whether the plan would have a lasting impact on overall sentiment and said that the dour economic mood would keep equities pressured for some time to come.
"There is support for the FTSE above 4,000, particularly from private clients, but there's an element of doubt about whether investors are correctly anticipating the extent of the recession," said Tim Whitehead, a stockbroker at Redmayne-Bentley in Leeds.
In a major break from existing aid programmes, the plan under consideration would seek to help homeowners before they fall into arrears on their loans. Current programmes only assist borrowers that are already delinquent. [
]Democratic leaders in the U.S. Senate and House of Representatives on Thursday wrapped up last minute tax-cut and spending details in the $789 billion economic stimulus bill, setting final votes for Friday in both chambers. [
]Congressional negotiators have agreed on a final "Buy American" provision as part of the economic stimulus bill that requires public works projects funded by the plan to use only U.S.-made goods, including iron and steel, a lobbyist said on Thursday. [
]"(Investors) will take comfort from the fact it appears to be a multi-pronged attack trying to stabilise the economy in the United States and that has ramifications for the global economy, and that helps cyclical stocks, like miners," Potts said.
COMMODITIES RESILIENT
Commodities stocks were stronger with energy companies supported as crude prices recovered slightly, snapping a five-day losing streak <CLc1>.
Oil giants Royal Dutch Shell <RDSa.L> and BP <BP.L> added 0.6 and 0.5 percent respectively while BG Group <BG.L> added 1.3 percent.
Similarly, mining stocks gained as metal prices edged higher.
BHP Billiton <BLT.L> added 2.1 percent and Xstrata <XTA.L> gained 4.4 percent but Rio Tinto <RIO.L> underperformed the sector, up 0.7 percent after Chinalco president Xiao Yaqing said on Friday the company had no plans to increase its minority stake in the miner. [
]The London Stock Exchange <LSE.L> rose 5.7 percent after it was announced that Xavier Rolet, an equities trading veteran who ran Lehman Brothers in France, has been appointed as the bourse's new chief executive. [
]Home improvement retail group Kingfisher <KGF.L> added 5.9 percent to top the list of large-cap risers after UBS raised it to "buy" from "neutral" and upped its price target.This helped peer Home Retail <HOME.L>, which added 6.8 percent.
UBS said that although there was no evidence yet that demand was improving, the capacity situation in both the retail and trade markets and a better outlook on costs, suggested profit forecasts for Kingfisher's B&Q unit may be on the turn.
Investors will watch a meeting of the Group of Seven (G7) finance ministers at the weekend in Rome as protectionist worries and dire figures from a shrinking euro zone economy set a gloomy tone. [
] (Reporting by Simon Falush; editing by Karen Foster)