* Miners fall on monetary policy tightening fears
* UK banks mixed; U.S. banking bill awaited
* Defensive gains; BT Group up on Citigroup upgrade
By David Brett
LONDON, March 15 (Reuters) - Britain's top share index was down 0.1 percent around midday on Monday, with miners weaker as China monetary policy concerns weighed on metals prices, outpacing defensive stock gains on waning investor risk appetite.
By 1156 GMT the FTSE 100 <
> index was 5.42 down points at 5,620.23, having added just 0.5 percent last week.Miners, which have been at the forefront of the recent market recovery, sustained the biggest losses on the index, weighed by lower metal prices as investors worried about Chinese inflation.
Eurasian Natural Resources <ENRC.L>, Vedanta Resources <VED.L>, Antofagasta <ANTO.L>, Kazakhmys <KAZ.L>, Rio Tinto <RIO.L> and Anglo American <AAL.L> fell 1 to 2 percent.
Banks were mixed ahead of the new banking regulation bill set to be unveiled in the United States on Tuesday, and with some negative broker comment.
Lloyds Banking Group <LLOY.L> and Barclays <BARC.L> each dropped 0.8 percent as Seymour Pierce initiated coverage on three UK banks with "sell" ratings. But Royal Bank of Scotland <RBS.L> gained 3 percent
In choppy trade, HSBC <HSBA.L> and Standard Chartered were 0.1 and 0.2 firmer, respectively.
"Fears over an impending interest rate rise in China and with details set to emerge on reform of financial regulation in the US, investors have looked to sell out of part of their holdings," said Joshua Raymond, market strategist at City Index.
BAE Systems <BAES.L> shed 0.6 percent. The company is to put forward a job creation package in a last-ditch attempt to secure a 4-billion-pound contract to build armoured reconnaissance vehicles for the British army, local media said on Sunday.
BSkyB <BSY.L> lost 1.3 percent as Evolution Securities cut its rating on the stock to "reduce" from "neutral" on valuation grounds.
The satellite broadcaster's shares rose 5 percent on Friday after traders cited talk that Rupert Murdoch may take the firm private.
British Airways <BAY.L> is 1.3 percent lower with a planned seven-day strike by cabin crew hanging over the shares. British Prime Minister Gordon Brown called the strike "unjustified and deplorable" on Monday, and said it should be called off. [
]Chipmaker Arm <ARM.L> and midcap peer CSR <CSR.L> dropped 1.3 and 2.4 percent, respectively, as UBS cut its ratings on both firms to "neutral" from "buy", also citing valuation grounds.
Mobile telecommunications firms Vodafone <VOD.L> and Inmarsat <ISA.L> fell 0.3 and 1.5 percent, respectively, as investors locked in some recent gains.
DEFENSIVE SUPPORT
BT <BT.L> gained 2.5 percent, topping the FTSE 100 <
> leaders board as Citigroup upped its rating for the telecoms operator to "buy" from "hold" with an increased target price of 150 pence, up from 145 pence, citing valuation grounds.Other defensively-perceived issues were the main support for the FTSE. Utilities, drugmakers, food retailers and beverage firms were all on the front foot.
Gas distribution utility Centrica <CNA.L> added 1.9 percent helped by Nomura, which raised its target price to 370 pence from 340 pence.
Food retailer Wm Morrison <MRW.L> climbed 0.8 percent having been in the doldrums since reporting full-year results last week, while pharmaceuticals AstraZeneca <AZN.L> and GlaxoSmithKline <GSK.L> rose 0.2 and 0.5 percent, respectively.
Brewer SABMiller <SAB.L> rose 0.3 percent.
Energy stocks were also a support for the index. Oil giant BP <BP.L> rose 0.5 percent and peer Royal Dutch Shell <RDSa.L> gained 0.3 percent.
Investors looking for some direction await a batch of U.S. data later today.
The March Empire State Index is scheduled for release at 1230 GMT, with U.S. February industrial output and capital utilization numbers due at 1315 GMT, followed by March's National Association of Homebuilders index after the London close at 1700 GMT. (Editing by Simon Jessop)