* FTSE 100 slides 2.5 percent
* Miners slide, Anglo American results drag
* Banks pressured as nationalisation fears resurface
By Simon Falush
LONDON, Feb 20 (Reuters) - Growing anxiety about the state of the financial sector and deepening gloom on the global economy sent banks and miners skidding lower on Friday, dragging Britain's top share index down 2.5 percent to a three-month low.
By 1130 GMT the FTSE 100 <
> was down 101.51 points at 3,916.86 after rising 0.3 percent the previous session. It earlier hit its lowest level since November 24 and is down 11.4 percent this year after falling more than 31 percent in 2008.Intensifying concerns about the ailing global economy hurt the demand outlook, weighing heavily on heavyweight miners and energy stocks.
BP <BP.L>, Royal Dutch Shell <RDSa.L> and Cairn Energy <CNE.L> fell between 1.2 and 3.3 percent while Xstrata <XTA.L>, Rio Tinto <RIO.L> and Kazakhmys <KAZ.L> lost 6.8-7.7 percent.
Anglo American <AAL.L> was the heaviest blue-chip loser, off 13.5 percent after it scrapped its 2008 dividend and said it will cut 19,000 jobs.
In New York, the Dow Jones Industrial Average <
> ended at a more than six-year low on Thursday, while Japan's Topix < > fell to its lowest level in 25 years as risk aversion gripped nervous investors globally."It's a follow through from the U.S. last night where the financials fell... and mining stocks are weak too with Anglo American and Rio Tinto under pressure," said Jonathan Jackson, head of equities at Killik & Co.
Banks were also among the heaviest fallers as investors fretted once again about the threat of nationalisation that the sector faces.
"We're going through one of those phases where the market corrects itself. No sooner does the European market decide where it wants to be than the U.S. and Asian markets fall," said Peter Dixon, UK economist at Commerzbank
Royal Bank of Scotland <RBS.L>, HSBC <HSBA.L>, Lloyds Banking Group <LLOY.L> and Standard Chartered <STAN.L> fell up to 4.7 percent.
"The market is falling because it is getting in tune with reality. It's a reflection of the deterioration in the global economy and the impact that will have on earnings, which is why this downturn has some way to go," Dixon said.
Equity investors took little solace from an unexpected rise in January retail sales, though the pound rallied on the news <GBP=>. [
]In his final speech before stepping down, John Gieve, the Bank of England's deputy governor, said the government should consider imposing caps on the amount mortgage companies can lend to homebuyers, The Daily Telegraph newspaper reported.
Insurer Prudential <PRU.L> was one of three blue-chip stocks in positive territory, up 10.8 percent after it said it will sell the bulk of its business in Taiwan to China Life <2823.TW>. (Reporting by Simon Falush; editing by Dan Lalor)