* FTSE 0.1 pct lower by mid-session
* Bank gains offset dragging miners, oils
* U.S. Gross Domestic Product figure eyed
By Kylie MacLellan
LONDON, Jan 30 (Reuters) - Britain's top share inched lower by mid-session on Friday as gains in banks helped offset losses from miners and weaker oils, while data gave a mixed outlook for the wider economy.
By 1133 GMT the FTSE 100 <
> had fallen 3.22 points to 4,186.99 after sliding 2.5 percent the previous session."The FTSE is stuck in a pretty tight trading range now. Everybody is hoping that it's managing to hang on to 4,000 at the bottom and there certainly doesn't seem much appetite to push it above 4,300 at the moment," said Jim Wood-Smith, head of research at Williams de Broe in Exeter.
Investors eyed the initial reading of U.S. fourth quarter Gross Domestic Product due at 1330 GMT, which is expected to show it at its weakest in 26 years.
"Generally the market is pretty featureless and is just drifting in front of the U.S. GDP number...that's just keeping people on the sidelines," Wood-Smith said.
Miners broadly fell, weighed down by lower metals prices and market talk that BHP Billiton <BLT.L> is guiding its forecasts lower. Shares in the miner, due to report its first half results on Wednesday, fell 6 percent. The company was unavailable for comment.
Anglo American <AAL.L> lost 3.2 percent and Xstrata <XTA.L> slid 4.3 percent.
Rio Tinto <RIO.L> bucked the trend, gaining 4.4 percent after the mining giant said it will sell its potash assets and its Corumba iron ore mine in Brazil for $1.6 billion to rival Vale <VALE.SA>.
Citigroup said it expects further asset sales from Rio Tinto over coming months. The broker repeated its "buy" rating on Rio Tinto shares.
BANKS END MONTH POSITIVE
Banks, which have had a roller-coaster ride in January, looked set to end the month in positive territory as investors once again decided that the heavy falls they experienced earlier in the month and last year make them good buying propositions.
Barclays <BARC.L>, Lloyds Banking Group <LLOY.L> HSBC <HSBA.L> and Standard Chartered <STAN.L> gained between 0.4 and 6.2 percent.
However the UK banking index <.FTNMX8350> has tumbled 19 percent this month after plummeting over 56 percent last year.
"The optimism of the bank revival, those nationalisation fears receding earlier in the week, that positive trend has been countered somewhat by the expected onslaught of rights issues and fundraising," said Paul Kavanagh, head of market strategy at Killik & Co.
Economic data released on Friday gave a mixed picture about the broader outlook.
British consumer confidence fell to its second lowest level on record in January as people fretted about the deepening recession and grew increasingly worried about their own finances, a survey showed on Friday. [
]But figures showed UK mortgage lending rose more than three times as fast as expected, while mortgage approvals also rose unexpectedly, an early indication banks are starting to lend after billions of pounds of capital injections from the government. [
]Energy heavyweights were mixed as crude prices rose slightly <CLc1>. BG Group <BG.L> gained 1.7, while Royal Dutch Shell <RDSa.L> fell 2.4 percent and BP <BP.L> trimmed 0.5 percent.
Private equity group 3i Group <III.L> gained 3.8 percent, recovering a little from the record low it touched the previous session on fears that it may be forced to shore up its finances through a rights issue.