* FTSE down 1.1 percent; Greece debt problems overshadow
* Miners, oils fade; weaker commodity prices
* Interest rate decisions in UK and Europe awaited
By David Brett
LONDON, April 8 (Reuters) - Britain's top shares shed 1.1 percent near midday on Thursday, with miners and oils weighed by falling commodity prices as Greek debt woes returned, and ahead of interest rate decisions in the UK and Europe.
By 1013 GMT the FTSE 100 <
> was down 65.65 points at 5,696.41 after it fell 18.29 points on Wednesday. The blue chips are up 5.3 percent in 2010.Miners were the biggest drag on the index, as commodity prices retreated across the board as the demand outlook clouded over.
Rio Tinto <RIO.L>, Xstrata <XTA.L>, Lonmin <LMI.L>, Anglo American <AAL.L>, Kazakhmys <KAZ.L> and BHP Billiton <BLT.L> fell 2 to 4.1 percent.
Investor confidence has been knocked by continuing anxiety over Greek debt problems, causing the FTSE 100 to retreat from a 21-month high set on Tuesday.
"With Greek debt issues still ongoing, traders could rightfully become nervous around their exposure," said Anthony Grech, market strategist at IG Index.
The cost to insure Greece's debt against default rose on Wednesday to a level higher than for Iceland's debt for the first time since 2005 amid scepticism over Greece's ability and willingness to fund its obligations. [
]Energy stocks were weighed by weaker crude <CLc1> which fell back for a second day after recent strong gains as the dollar rose and higher stockpiles.
BG Group <BG.L>, BP <BP.L>, Royal Dutch Shell <RDSa.L>, Tullow Oil <TLW.L> and Cairn Energy <CNE.L> fell 0.2-1.9 percent.
Enquest <ENQ.L>, which started trading on Tuesday following its demerger from oil services firm Petrofac <PFC.L>, shed 3.1 percent. Indexes provider FTSE has confirmed its deletion from the index with effect from the start of trading on Friday, April 9.
Risk sensitive bank stocks also fell. Barclays <BARC.L>, Standard Chartered <STAN.L>, Royal Bank of Scotland <RBS.L> and Lloyds Banking Group <LLOY.L> fell 1.7-2.3 percent.
RATE DECISION DRAWS INTEREST
Economists expect the Bank of England to keep interest rates at 0.5 percent and not to add to the 200 billion pounds of asset purchases made under its quantitative easing programme, as inflation eased in line with central bank forecasts this month and growth remains uncertain.
The pace of future fiscal tightening is also unclear with the British election set for May 6 and no party clearly in the lead.
The European Central Bank, meanwhile is expected to keep euro zone interest rates at a record low of 1.0 percent. [
].Upbeat UK industrial output data, which rose twice as fast as expected in February, did little to boost investor sentiment. [
]Among a handful of gainers was British Airways <BAY.L>, up 0.2 percent after the UK carrier and Spain's Iberia <IBLA.MC> signed an $8 billion merger to create the world's third largest airline by revenue, bringing a tie-up with American Airlines <AMR.N> a step closer.
After the interest rate decisions, investors will focus on the latest weekly U.S. jobless claims, due out at 1230 GMT, to provide a further snapshot of the unemployment picture across the Atlantic.
(Editing by Mike Nesbit)