* FTSEurofirst 300 tumbles 2.1 percent
* Oil shares, banks lead the decline
* BOE holds interest rates at 5 pct
By Rebekah Curtis
LONDON, July 10 (Reuters) - European stocks fell 2 percent on Thursday as global growth concerns hit oil shares, and banks clung to their day's heavy losses as some major U.S. financials plunged on worries about the strength of their balance sheets.
The pan-European FTSEurofirst 300 index <
> ended down 2.1 percent at 1,156.98 points, wiping out a 1.7-percent gain notched up the day before.The oil sector topped the losers, with BP <BP.L>, Royal Dutch Shell <RDSa.L> and Total <TOTF.PA> all shedding between 2.1 and 2.8 percent after U.S. inventory data on Wednesday showed a surprise rise in gasoline stocks, which can point towards a decline in consumer demand.
Wall Street rose in choppy trade, but shares in mortgage providers Freddie Mac <FRE.N> and Fannie Mae <FNM.N> dropped 22 percent and 12 percent, respectively, on investor concern over whether they would be able to obtain the capital needed.
Adding to nerves in the sector, Lehman Brothers <LEH.N> shares tumbled more than 8 percent on talk that bond fund Pimco was reducing business with the bank. A Lehman spokesman declined to comment, while a Pimco spokesman said Pimco continued to trade with Lehman.
"A lot of eyes are on Lehman at the moment. That's the kind of thing that puts the fox in the hen coop as far as the financials are concerned," said Jeremy Batstone-Carr, head of private client research at Charles Stanley in London.
Among European banks, Santander <SAN.MC> shed 1.9 percent, HSBC <HSBA.L> lost 1.4 percent and UBS <UBSN.VX> dropped 2.4 percent.
"One thing is pretty certain and that is that we are some distance from the financial sector being out of the woods," Batstone-Carr added.
"Very few people imagined that the financial sector would escape all this unscathed."
The DJStoxx index of European banks <.SX7P> has fallen 35 percent so far this year as an uncertain earnings outlook and multi-billion-dollar writedowns have dogged investors.
BOE HOLDS RATES
The Bank of England left British interest rates unchanged at 5 percent, as expected.
Around Europe, Britain's FTSE <
> was down 2.2 percent, Germany's DAX < > fell 1.3 percent and France's CAC < > dropped 2.5 percent.French supermarket group Carrefour <CARR.PA> was the biggest percentage loser in Europe, losing 8.6 percent as it disappointed investors with its second-quarter sales and cautious outlook. Cazenove lowered its rating on the stock to "underperform" from "outperform".
"Carrefour does appear to have been caught by surprise by the downturn and the strategy to cope seems to be being developed on the hoof," the broker said in a note.
Danone <DANO.PA>, a large supplier to Carrefour, shed 6 percent and peers Nestle <NESN.VX> and Unilever <UNc.AS> fell 4.3 and 4.8 percent respectively.
Britain's Associated British Foods <ABF.L> fell 3.8 percent after releasing third-quarter sales which showed underlying growth at its discount fashion stores started to slow markedly.
Bucking the negative market trend, Norwegian aluminium group Norsk Hydro <NHY.OL> pushed up the industrial metals sector by rising 7.3 percent on news that China's top 20 aluminium producers have agreed to cut production by 5-10 percent from July to support prices. Three-month aluminium futures <MAL3> hit record highs in London on Thursday.
Fresenius Medical Care <FMEG.DE>, the German dialysis care provider, shrugged off a negative change in an S&P outlook, to gain 5.3 percent after the U.S. Senate cleared legislation that includes a combined payment for dialysis drugs and services. (Additional reporting by Patrizia Kokot)