* FTSE 100 up 1.0 pct
* Banks gain as Fannie, Freddie news still helps sentiment
* Miners knocked by falling metals prices as dollar rises
By Jon Hopkins
LONDON, Sept 9 (Reuters) - Britain's leading share index was up 1 percent at midday on Tuesday, boosted once again by a rally from banks after the U.S. government's plan to take control of mortgage lenders Fannie Mae and Freddie Mac.
By 1154 GMT the FTSE 100 <
> was up 51.0 points at 5,497.3 after closing up 205.6 points, or 3.9 percent, on Monday and recovering another chunk of last week's 7 percent drop.U.S. stock futures <SPc1> <DJc1> pointed to a higher opening on Wall Street after Monday's sharp gains in the wake of the Fannie and Freddie bail-out move and as a drop in oil prices eased inflation worries.
"With oil now trading close to $105 per barrel many will be talking about a test of $100 and with many moving back towards equity markets after yesterday's good news it could spell the end for the commodity boom," said Ian Griffiths, a dealer at CMC Markets.
"The economic calendar is looking rather light of data for this afternoon so possible fall out in the financial sector and commodity stocks will be the main focus as traders take stock of yesterdays moves," Griffiths added.
After gaining sharply in the previous session, banks were again the main driver behind the FTSE 100 rally .
Royal Bank of Scotland <RBS.L>, HBOS <HBOS.L>, Barclays <BARC.L>, and Lloyds TSB <LLOY.L> rose between 2.8 and 5 percent.
HSBC <HSBA.L> added 2.1 percent. Traders noted talk that HSBC could be eyeing troubled Swiss peer UBS <UBSN.VX> although most dismissed this as unlikely. HSBC declined to comment.
Other financial issues also rallied, with insurers Prudential <PRU.L> and Legal & General <LGEN.L> up 4.1 and 3.7 percent respectively, while insurer and fund manager Old Mutual <OLM.L> gained 2.8 percent, all boosted by the recovery in equity valuations.
The weakness in crude prices was a lift for airlines British Airways <BAY.L> and easyJet <EZY.L> and cruise operator Carnival <CCL.L> as fuel costs concerns abated.
U.S. crude oil futures <CLc1> fell back toward a five-month low at around $105 a barrel on Tuesday as strength in the dollar drove investors away from commodities.
MINERS WEIGH
Miners were the biggest losers on the strong dollar and as concerns about global growth and saw gold <XAU=> and other precious metals prices fall.
Kazakhmys (KAZ.L>, Eurasian Natural Resources <ENRC.L>, Lonmin <LMI.L>, Xstrata <XTA.L> and Antofagasta <ANTO.L> were all down between 2.3 and 6.3 percent.
Among oils the picture was more mixed, with Cairn Energy <CNE.L>, Tullow Oil <TLW.L>, and Royal Dutch Shell <RDSa.L> all easier.
BG Group <BG.L>, however, rose 1 percent after it admitted defeat in its hostile bid for Australian utility and gas fields owner Origin Energy <ORG.AX> after Origin formed a joint venture with U.S. oil major ConocoPhillips <COP.N>.
Oil services firm Petrofac <PFC.L> lost 2.3 percent after Deutsche Bank cut its stance to "hold" from "buy" and Goldman Sachs removed the stock from its "conviction buy" list.
Negative broker comment also knocked drugs blue chip Shire <SHP.L>, down 2.7 percent after Goldman Sachs cut its rating to "neutral" from "buy".
In the mid-cap FTSE 250 <
>, Qinetiq <QQ.L> was the worst performer, down 7.5 percent after the UK government said it was selling its 18.9 percent stake in the company.Numis Securities said talk suggested the placing price for the stock on offer via an accelerated book build could be 205 pence. (Editing by Quentin Bryar)