* Miners weak after Chinese data, Rio update
* Banks in demand after JPMorgan results, Exane upgrade
By Jon Hopkins
LONDON, April 15 (Reuters) - Britain's top shares were flat in mid-session trade on Thursday, with falls by heavyweight miners offsetting gains by banks, as investors paused for breath after advances on positive U.S. earnings.
At 1041 GMT, the FTSE 100 <
> index was up 2.53 points at 5,798.78, after poking above 5,800 early on."Despite the positive start to the U.S. earnings season so far, closer to the UK shores investors are not getting too far ahead of themselves," said Joshua Raymond, market strategist at City Index.
Weak miners were the main drag on sentiment for the blue chips, with the sector giving back some recent gains after a mixed update from Rio Tinto <RIO.L> and as base metal prices dipped back after some strong Chinese data.
BHP Billiton <BLT.L>, Rio Tinto <RIO.L>, Eurasian Natural Resources <ENRC.L>, Anglo American <AAL.L>, Xstrata <XTA.L>, and Kazakhmys <KAZ.L> fell 0.6 to 1.3 percent.
Rio Tinto slightly raised its production guidance for iron ore after posting a 39 percent jump in first-quarter output driven by Chinese demand and recovery in the West. [
]China's annual economic growth quickened in the first quarter to 11.9 percent, the fastest pace since 2007, benefiting from a low base of comparison last year and the momentum from massive stimulus packages. [
]"This will inevitably re-raise concerns that they may be forced into cooling growth in the near term, which is likely to have an impact on metal demand," City Index's Raymond said.
Banks led the blue chips gainers after the sector got a boost from above-forecast earnings from U.S. peer JPMorgan Chase <JPM.N> on Wednesday. Bank of America <BAC.N> continues the sector reporting season on Friday.
Royal Bank of Scotland <RBS.L>, Lloyds Banking Group <LLOY.L>, Barclays <BARC.L>, HSBC <HSBA.L> and Standard Chartered <STAN.L> put on 0.4 to 1.9 percent.
Banks also benefited from an Exane BNP Paribas note upping its sector stance to "neutral" from "underperform".
ENERGY BOOST
Energy issues also gave the blue chips a lift, with positive comment from Credit Suisse supporting the sector.
The broker raised target prices across the sector for both integrated oils and oil explorers, and upped its rating for BP <BP.L> to "outperform" from "neutral".
BP shares added 0.5 percent, while BG Group <BG.L>, Tullow Oil <TLW.L> and Cairn Energy <CNE.L> gained 0.1 to 0.9 percent.
But Royal Dutch Shell <RDSa.L> bucked the firmer sector trend, losing 0.4 percent. The crude price <CLc1> was lower.
Experian <EXPN.L> was the biggest FTSE 100 faller, down 3.4 percent after the credit information firm's trading update failed to inspire. [
]Weakness in selected defensive issues was also a feature among the blue-chip fallers. British American Tobacco <BATS.L> and Imperial Tobacco <IMT.L> fell 1.6 and 0.8 percent, respectively, while drinks firm Diageo <DGE.L> lost 1.3 percent.
Cruise-operator Carnival <CCL.L> was a top FTSE 100 riser, up 1.8 percent after Morgan Stanley hiked its target price and repeated its "overweight" stance.
BT Group <BT.L>, up 2.1 percent benefitted again from an upbeat Morgan Stanley note published on Wednesday.
On the macroeconomic front, British consumer morale last month suffered its biggest fall since July 2008, wiping out all the gains since the start of the year due to a sharp drop in optimism about the next six months in a Nationwide Building Society survey. [
]No other domestic data was released on Thursday, so investors will look across the Atlantic. U.S. weekly jobless claims are due at 1230 GMT, together with April's Empire State Index, while the Philly Fed index is due at 1400 GMT. (Editing by Karen Foster)