The FTSE 100 index closed up 89.76 points, or 1.5 per cent, at 5,945.71, its fifth consecutive day of gains, managing to close out the quarter in slightly positive territory.
Lloyds Banking Group led the banks higher, jumping 9.7 per cent, as investors welcomed plans by its new chief executive Antonio Horta Osorio to target a leaner group in a radical overhaul.
“There will be some material downgrades near term, but in the medium term [the review promises] a marked improvement,” said Atif Latif, director of trading at Guardian Stockbrokers.
Lloyds’ peer Royal Bank of Scotland advanced 4.6 per cent, partly in sympathy with its banking peer.
RBS was also boosted by reports that Mitsubishi UFJ Financial Group is in advanced talks to buy an Australia-based infrastructure advisory unit of RBS and its portfolio of public-private project-finance assets.
BG Group was the standout performer among integrated oils, ahead 4.7 per cent, after the British gas producer doubled its best estimate of its oil and gas reserves in Brazil’s Santos basin to six billion barrels.
British oil services firm Petrofac, however, fell two per cent, shedding some of the gains it made in the run up to its latest update. Despite this being in-line, an analyst said he was surprised by the announcement of the impending retirement of Petrofac’s chief financial officer.
The Greek vote yesterday cleared the last obstacle to the next slice of aid from the European Union and the International Monetary Fund, but strategists and traders cautioned that the country is merely “kicking the can down the road”.
“We seem to be heading back towards the 6,000 barrier again but I’m still far from confident. Obviously it’s another short-term successful solution to the crisis, but I've got no confidence that any measures voted in by the Greek parliament will actually be enacted by the Greek people,” said Martin Dobson, head of trading at Westhouse Securities..
Strategists also warned that the FTSE 100’s rally could have been inspired by end-of-quarter window dressing by fund managers to make their portfolios look better, and the fact that the Federal Reserve’s bond-buying programme has drawn to an end could make further gains from equity markets more difficult.
“Don’t get suckered into thinking that the sell-off is over... I think we’re on rather dangerous grounds,” said David Morrison, market strategist at GFT Global.
One factor traders said could counter these potentially negative catalysts would be a resurgence of merger and acquisition activity.
The market has been awash with bid rumours of late, with shares in interdealer broker ICAP and free-to-air broadcaster ITV rising strongly on Wednesday on talk they could be targets.
On the FTSE 250, the London Stock Exchange advanced 11 per cent on speculation it could become a takeover target for Middle East investors Borse Dubai and the Qatar Investment Authority, after its aborted $3.5bn bid for Canada’s TMX Group. Nasdaq OMX Group could also be assessing an approach to LSE, according to reports.