* FTSE 100 falls 0.6 percent; Eurozone debt contagion fears
* Banks, miners weak; investor risk appetite hit
* Oils majors rise; Royal Dutch Shell results
By David Brett
LONDON, April 28 (Reuters) - Britain's top shares fell for a second day on Wednesday on mounting anxiety about euro zone debt, with falls in banks and miners outpacing gains in energy stocks after upbeat results.
European Central Bank President Jean-Claude Trichet and International Monetary Fund Managing Director Dominique Strauss-Kahn, in Berlin to discuss Greece's fiscal crisis, will hold a news conference around 1230 GMT on Wednesday.
At 1037 GMT, the FTSE 100 <
> index was down 30.59 points, or 0.6 percent, at 5,572.93, having tumbled 2.6 percent on Tuesday -- its biggest one-day percentage dip since late November.Euro zone's debt problems intensified following credit rating downgrades by Standard & Poor's for both Greece and Portugal late on Tuesday. [
]"There has been too much talk and not enough action," said Howard Wheeldon, strategist at BGC Partners.
"The underlying problem is despite all the promises and all the rhetoric there has been no mechanism that allows the process of injecting funds into Greece."
Royal Bank of Scotland <RBS.L> was down 3.5 percent. The part-nationalised bank is holding its annual general meeting on Wednesday.
Lloyds Banking Group <LLOY.L>, which outperformed after a solid trading update on Tuesday, dropped 3.3 percent, while Barclays <BARC.L> fell 2.5 percent.
But Asia-focused HSBC <HSBA.L> and Standard Chartered <STAN.L> shed just 0.4 and 0.1 percent respectively.
Other financials were also pressured by retreating risk appetite. Man Group <EMG.L>, the world's largest listed hedge fund firm, and insurers Admiral Group <ADML.L> and Aviva <AV.L> were 1.9 percent-3.2 percent lower.
Miners were pegged back along with metal prices, as investors rushed to the traditional safe-haven of the dollar.
Rio Tinto <RIO.L>, Xstrata <XTA.L>, Antofagasta <ANTO.L>, and Lonmin <LMI.L> shed 2.1 to 2.7 percent.
Gold miner Randgold Resources <RRS.L> bucked the sector trend, up 1.6 percent, benefitting as a proxy for safe-haven buying of gold.
Drugmaker GlaxoSmithKline <GSK.L> swung into positive territory, up 0.2 percent, after reporting first-quarter earnings that beat forecasts, while peers AstraZeneca <AZN.L> and Shire <SHP.L> fell 0.7 and 1.5 percent, respectively.
ENERGY GAINS
Energy shares prevented the FTSE from sliding further as better-than-expected results in the sector lifted some of the wider market gloom.
Royal Dutch Shell <RDSa.L> topped the FTSE risers chart, up 3.2 percent as it posted an above-forecast 49 percent rise in first-quarter net profit. [
]BP <BP.L> added 2 percent, having posted strong profits on Tuesday, while BG Group <BG.L>, which posts its first-quarter earnings on Thursday, added 1.5 percent.
No important data is due for release on Wednesday, so the macro focus was on the outcome of the latest U.S. Federal Reserve meeting, due at 1815 GMT, after the London close. No change is expected to U.S. monetary policy.
Ex-dividend factors took a combined 5.47 points off the FTSE 100 index, according to Reuters calculations, with ARM Holdings <ARM.L>, Centrica <CNA.L>, Reed Elsevier <REL.L>, and Tesco <TSCO.L> all trading without payout entitlements. (Editing by Rupert Winchester)