* Banks higher after JPMorgan results
* Oils, miners rebound with commodity prices
* Vodafone up, Pearson down after broker comment
By Jon Hopkins
LONDON, April 16 (Reuters) - Britain's leading share index was 1 percent higher at midday on Thursday, fuelled by gains from banks as results from JP Morgan Chase & Co <JPM.N> were eyed, and by strength in commodity issues.
By 1109 GMT, the FTSE 100 <
> index was 39.59 points higher at 4,007.99, having spent the morning session oscillating around the 4,000 level.The UK benchmark index closed 20.59 points, or 0.5 percent, lower on Wednesday and is down 10.5 percent so far this year, after dropping over 31 percent last year.
"Whilst the FTSE is having a decent day so far, of late we've seen moves easily unwound as sentiment just changes. It's a very fickle sentiment on the market as a whole so I think we're definitely watching for (the impact of) those JP Morgan figures," said Tim Hughes, head of trading at IG Index.
Banks were the main gainers in London as investors chewed over first-quarter results from peer JPMorgan.
The U.S. bank's first quarter numbers looked to have beaten estimates but U.S. stock futures <
> <.SPc1> fell back after the earnings release, with Wednesday's strong gains on Wall Street likely to be reversed.Lloyds Banking Group <LLOY.L> remained the top FTSE 100 gainer, up 7.7 percent, while Royal Bank of Scotland <RBS.L>, Barclays <BARC.L> and HSBC <HSBA.L> added between 0.8 and 5.1 percent, respectively.
Banks drew heart from Wednesday's signs that the recession was abating in the United States as the Federal Reserve's Beige Book showed the speed of the contraction in the economy was fading.
Oil majors also provided a strong boost to the blue chips as crude prices <CLc1> moved back up towards the $50 a barrel level, with BP <BP.L>, Royal Dutch Shell <RDSa.L> and BG Group <BG.L> up between 1.0 and 1.3 percent.
BP holds its annual general meeting on Wednesday.
Miners stood out as well, higher as copper prices rallied, although China GDP data took some of the shine off the metal's rise.
China's economy slowed in the first quarter to its weakest pace on record, but an improvement in data for March offered tentative signs that the worst may be over for the world's third-largest economy.
Xstrata <XTA.L>, Kazakhmys <KAZ.L>, Vedanta Resources <VED.L>, Rio Tinto <RIO.L> and BHP Billiton <BLT.L> gained between 1.1 percent and 3.6 percent.
BROKER COMMENT MIXED
Mobile telecoms heavyweight Vodafone <VOD.L> added 1.5 percent helped by an upgrade from Bernstein to "outperform" from "market perform".
Insurer Old Mutual <OML.L>, however, shed 1.9 percent after UBS cut its rating to "neutral" from "buy", while peer Friends Provident <FP.L> fell 1.5 percent as Deutsche Bank cut its rating to "hold" in a European sector review.
Pearson <PSON.L> lost 2.1 percent as Exane-BNP Paribas cut its rating to "neutral" in a media sector review.
Packaging firm Bunzl <BNZL.L> was the biggest blue-chip faller, down 10.4 percent after a trading update said its underlying sales fell marginally in the first quarter.
Credit checking firm Experian <EXPN.L> also fell back after a slightly cautious trading update, down 2.6 percent, with the group saying the environment for lending has not improved.
There were more signs that the UK economy is still facing fierce headwinds. British like-for-like retail sales fell year-on-year for the second month running in March, the British Retail Consortium said.
"It's very much a dog-eat-dog world out there for retailers at the moment. Trading conditions are immensely tough, but those who find the balance between discounting stock and keeping sufficient margins will be the ones that survive and eventually prosper," said Rob Pike, head of trading at ShortsandLongs.com.
(Additional reporting by Paul Lauener; editing by Simon Jessop)