* Miners gain on stronger metal prices, broker upgrades
* Banks higher; Lloyds Banking Group upgraded
* British Airways down on record full-year loss
By Jon Hopkins
LONDON, May 22 (Reuters) - Britain's top share index was 0.8 percent higher at midday on Friday, supported by strength in miners, buoyed by rebounding metal prices and positive broker notes, and a rally by banks.
At 1145 GMT the FTSE 100 <
> index was 33.64 points higher at 4,379.11, having fallen 122.94 points on Thursday."Although we have seen some quite impressive swings up and down this week, the net result is very little change from where we were last Friday, showing the lack of commitment traders have to the bull or bear side at the moment," said Anthony Grech, market strategist at spread betters, IG Index.
Miners gave the biggest lift to the index after seeing sharp falls in the previous session, lifted by recovering metal prices and upgrades from Goldman Sachs and price target hikes from Credit Suisse.
Eurasian Natural Resources <ENRC.L>, Kazakhmys <KAZ.L>, Fresnilo <FRES.L>, Rio Tinto <RIO.L>, Xstrata <XTA.L> and BHP Billiton <BLT.L> gained 1.9-6.6 percent.
Oil majors also added their strength as crude <CLc1> moved higher again, with BP <BP.L>, BG Group <BG.L>, and Royal Dutch Shell <RDSa.L> adding 0.2-1.7 percent.
Banks were higher recovering after falls on Thursday, with HSBC <HSBA.L>, Standard Chartered <STAN.L>, Royal Bank of Scotland <RBS.L>, Barclays <BARC.L> and Lloyds Banking Group <LLOY.L> adding 0.6-2.6 percent.
Exane BNP Paribas raised its rating for Lloyds to 'neutral' from 'underperform', while reducing its target by 14 percent to 60 pence.
Real estate issues got a boost from sector consolidation moves, with mid-cap Segro <SGRO.L>, up 2 percent, after saying it had made a takeover approach to small cap peer Brixton <BXTN.L>, up 20 percent.
British Land <BLND.L>, hit by disappointing results on Thursday, rallied 4.3 percent, while Land Securities <LAND.L> gained 2.5 percent, and Hammerson <HMSO.L> took on 3.6 percent.
BA FLIES SOUTH
British Airways <BAY.L> shed 1.2 percent after the airline reported a record loss, nearly doubled its debt and cancelled its dividend. [
]"Today's numbers really are a comprehensive tale of woe, with almost every metric eligible for intensive care as BA heads deep into the perfect storm," says Richard Curr, head of dealing at CFD specialists Blue Index.
Cable & Wireless <CW.L> extended Thursday's post-results decline, down 2.5 percent with a number of brokers cutting target prices for the telecoms firm.
SABMiller <SAB.L> was also weak, down 0.5 percent as JP Morgan downgraded its rating to 'neutral' from 'overweight' in a European beverages review.
Drug issues were the main drag on blue chip sentiment, with GlaxoSmithKline <GSK.L>, AstraZeneca <AZN.L>, and Shire <SHP.L> down 0.6-1.1 percent.
Investors shrugged aside the second reading for British first-quarter GDP which was unrevised, with Thursday's move by ratings agency S&P to revise its outlook for Britain to negative from stable continuing to weigh on underlying sentiment.
"We had a bit of a reality check yesterday after all the joyous enthusiasm...it's all very well having some supposed green shoots but the underlying issues are still there," said Justin Urquhart-Stewart investment director at Seven Investment Management.
Overall, trading volumes were thin ahead of a long public holiday weekend in Britain and the United States. (Additional reporting by Simon Falush; editing by Dan Lalor) (jon.hopkins@reuters.com; +44 207 5 42 8954; Reuters Messaging:jon.hopkins.reuters.com@reuters.net))