By Dominic Lau
LONDON, Feb 25 (Reuters) - Britain's top share index rose 1.7 percent by mid-session on Monday as merger and acquisition talk helped fuel a rally in beaten-down banks, while firmer crude prices lifted oil shares.
At 1148 GMT, the FTSE 100 <
> was up 97 points at 5,985.5, also buoyed by hopes for a rescue package for bond insurer Ambac Financial <ABK.N> that would limit damage from a credit crisis.The UK benchmark index advanced 1.7 percent last week, but it is still down 7.3 percent for the year on concerns over the U.S. economy.
"Overnight we had some positive news on Ambac - the fact that certainly one of the largest monolines could be underwritten by a consortium of banks," said Richard Hunter, head of UK equities at Hargreaves Lansdown.
"That's taken very positively because the market is looking for signs perhaps some of the corners have been turned."
European shares also traded higher by midday.
Banks were big gainers, contributing nearly 38 points to the index, on the bond insurer news and as Qatar's $60 billion sovereign wealth fund eyed investing in European banks.
Qatari Prime Minister Sheikh Hamad bin Jassim al-Thani said in an interview that he favoured investing in European over U.S. lenders because U.S. bank stocks were likely to fall further on subprime-mortgage writedowns. [
]Royal Bank of Scotland <RBS.L> advanced 7.5 percent after the Sunday Telegraph said the Qatari government was considering making an investment in Britain's second biggest bank and on hope that the bank would lift its dividend and post strong results this week. RBS was not immediately available for comment.
"There are some hopes that we could see some robust figures from RBS later in the week. Obviously we just hope there won't be any loose cannons in terms of the others that are reporting," Hunter said.
Also in the sector, Alliance & Leicester <ALLL.L> rose 8.1 percent with Bradford & Bingley <BB.L> up 7.8 percent, after comments by rival Lloyds TSB <LLOY.L> stoked speculation they could become takeover targets. Lloyds, whose shares gained 3 percent, declined to comment on talk it could be interested in either of its UK peers.
Barclays <BARC.L>, HSBC <HSBA.L> and Standard Chartered <STAN.L> were up between 2.4 and 4.2 percent.
OIL SHARES PUMP HIGHER
Oil major BP <BP.L> tacked on 2.1 percent, while Royal Dutch Shell <RDSa.L> added 1.2 percent and gas producer BG <BG.L> advanced 1.3 percent.
Miners also were mostly stronger. BHP Billiton <BLT.L>, Rio Tinto <RIO.L>, Anglo American <AAL.L>, Xstrata <XTA.L> and Kazakhmys <KAZ.L> were up but Antofagasta <ANTO.L> and Lonmin <LMI.L> slipped.
Hammerson <HMSO.L> climbed 6 percent after posting a strong 3 percent rise in full-year adjusted net asset value, ahead of market expectations.
Within the property sector, Land Securities <LAND.L> added 4.7 percent after weekend media reports that a number of private equity firms were considering making a bid for its property outsourcing arm Trillium.
But Associated British Foods <ABF.L> fell 2.5 percent to top the losers' list on the FTSE 100 as trader cited concerns that higher commodity prices would hurt its earnings. (Editing by David Cowell)