* FTSE 100 falls 2.1 pct * Financials weigh as US bailout plan hits snags
* Miners, energy stocks track weaker metal and crude prices (For a TAKE A LOOK on US bailout, click on [
])By Dominic Lau
LONDON, Sept 23 (Reuters) - Britain's top share index shed 2.1 percent by midday on Tuesday as uncertainty over a proposed U.S. rescue package to save the financial sector weighed on banks and weak raw material prices hurt commodity stocks.
By 1013 GMT the FTSE 100 <
> was down 107.7 points at 5,126.8, extending Tuesday's 1.4 percent losses. The index is down more than 20 percent for the year.Banks took a hit, as the planned Washington bailout to shore up the battered U.S. financial system looked set to drag into next week as lawmakers haggled over how exactly they could make Wall Street pay for its rescue. [
]Barclays <BARC.L>, HSBC <HSBA.L>, Royal Bank of Scotland <RBS.L>, Lloyds TSB <LLOY.L>, HBOS <HBOS.L> and Standard Chartered <STAN.L> lost between 1.4 and 9 percent.
The British Bankers' Association said mortgage approvals fell 64 percent on the year to a record low in August, suggesting no end was in sight for the country's housing market woes. [
]"There is increasing concern that overseas investors will consider and possibly start to reduce exposure to things like U.S. Treasury bonds, which would potentially undermine the work that the Federal Reserve and the government are trying to do there," said Tim Whitehead, head of portfolio services at Redmayne-Bentley.
"That in itself could force more of a crisis of confidence than we have already. I don't subscribe to the belief that the U.S. economic system is in danger of a complete meltdown. But the amount of exposure the government will have to these toxic assets is a concern," he said.
Overnight U.S. stocks tumbled, with banks, homebuilders and big manufacturers among the biggest decliners.
Investors are expected to keep a close watch on the testimony due to be given by U.S. Treasury Secretary Henry Paulson, Federal Reserve Chairman Ben Bernanke and Securities and Exchange Commission Chairman Christopher Cox to the Senate Banking Committee from 1330 GMT.
Hedge fund group Man <EMG.L> was down 8.1 percent.
LOWER COMMODITIES
Miners sagged along with weaker metal prices. BHP Billiton <BLT.L>, Rio Tinto <RIO.L>, Anglo American <AAL.L>, Xstrata <XTA.L>, Vedanta Resources <VED.L> and Eurasian Natural Resources <ENRC.L> fell 3.1 to 11.3 percent.
Energy stocks also tracked crude prices <CLc1> lower, with BP <BP.L>, Royal Dutch Shell <RDSa.L>, BG Group <BG.L>, Cairn Energy <CNE.L> and Tullow Oil <TLW.L> down 0.4 to 4.5 percent.
But with oil prices still higher than a week ago transport stocks were under pressure. British Airways <BAY.L>, rail and bus operator FirstGroup <FGP.L> and cruise operator Carnival <CCL.L> were all down by between 2.7 and 5.7 percent.
"There is no follow through from the $700 billion package," said Chris Hossain, senior sales manager at ODL Securities.
"And the feeling is that since short selling has been banned on financials, it looks like retailers and housebuilders are the next," he added.
Marks & Spencer <MKS.L> lost 4 percent after Deutsche Bank downgraded its rating on the retailer to "hold" from "buy", traders said.
Within the retail sector, Next <NXT.L> languished 4.1 percent and Kingfisher <KGF.L> sagged 5.6 percent.
International Power <IPR.L> added 1.4 percent after Citigroup upgraded the stock to "buy" from "hold".
Imperial Tobacco <IMT.L>, British American Tobacco <BATS.L> and GlaxoSmithKline <GSK.L> were also among the handful of gainers on the index as they were seen as defensives.
Among mid-caps, Mitchells & Butlers <MAB.L> sank 10.6 percent after the pubs operator warned it faced rising costs next year and will need to accelerate sales growth to maintain profits.
Tate & Lyle <TATE.L> slumped 13.4 percent after it said it had lost a U.S. patent case against manufacturers and importers of Chinese sucralose. (Editing by Greg Mahlich)