(Updates with Wall Street outlook)
By Mike Dolan
LONDON, June 19 (Reuters) - European stocks rallied on Thursday after unexpected news of a British shopping spree last month offset early gloom about the banking sector and sent sterling and UK market interest rates surging.
Wall Street also looked set for a positive start.
British retail sales soared in May by 3.5 pct, their fastest monthly rate since the series began in 1986 driven by record sales of food and clothes.
The figures, in contrast to an expected 0.1 percent fall, are likely to reinforce market expectations that UK interest rates will go up before they go down -- even in the face of policymakers' concern about a sharp slowdown in growth.
But they also serve to lift some of the gloom about the state of major western economies, where talk of consumer retrenchment and deep recession have been rife in recent weeks.
"I'm staggered," aid Philip Shaw, economist at Investec. "The figures are just completely on a different plane compared to market expectations."
The UK sales shock reversed early losses on the FTSE 100 <
> and the pan-European FTSEurofirst 300 index <.FTEU>, with both flat on the day after losing as much as 0.5 percent shortly after the open.British retailers Tesco <TSCO.L> advanced 1.5 percent.
Sterling rallied to around $1.9700 <GBP=>, up more than half a percent on the day. It had traded at $1.9629 before the announcement.
It also climbed against the euro, pushing the single currency down 0.8 percent to 78.62 pence <EURGBP=>.
Gilt futures erased 15 ticks of gains to trade 30 ticks lower on the day at 103.84 <FLGU8>.
"The (retail numbers) came out very strongly, surprisingly so, a massive jump in the headline and pretty much across the board and we see a particular strength in clothing and footwear," said Daragh Maher, senior currency strategist at Calyon.
"For now sterling bounces on it. But in terms of its meaning for policy, I think they (the Bank of England) would want to see a confirmation that this isn't some weird aberration."
BANK GLOOM
The news lifted all European markets, where stocks had opened weaker.
But banks continued to be the biggest losers.
The UK dominated the banking story too, with British lender HBOS <HBOS.L> warning of housing-related writedowns and hitting shares in Royal Bank of Scotland <RBS.L>, Barclays <BARC.L> and Alliance & Leicester <ALLL.L>. All fell between 1.5 and slightly more than 6 percent.
In continental Europe, BNP Paribas <BNPP.PA> was down 2.3 percent and UBS <UBSN.VX> lost 2.7 percent.
"They now seem to be continuously coming out with more bad news," said Justin Urquhart Stewart, a director at Seven Investment Management.
Japanese markets and bank stocks also fell sharply earlier on banking concerns, with the Nikkei 225 <
> dropping 2.2 percent and Japanese bank stocks taking a beating.DOLLAR UP BROADLY
The dollar <.DXY> rallied broadly, benefiting in part from the Swiss National Bank's decision to keep its interest rates on hold which stalled the Swiss franc's overnight advance.
Rising money market rates and growing inflationary pressures had led a significant minority of investors to expect a SNB rate rise from 2.75 percent, taking the Swiss franc to 17-year highs against the yen overnight. But the rally fizzled out as the bank declined to act.
Analysts said that investors might see the SNB decision as a reason to scale back expectations for European Central Bank rate rises after an expected increase in July.
"The SNB faces the same sorts of difficulties that central banks in the rest of the developed world seem to be facing, with regards to inflation pressure building and the global growth picture looking less certain," BNP Paribas senior currency strategist Ian Stannard said.
"Traditionally the SNB has liked to lead the ECB so there might be some scaling back of market expectations for the ECB...Interestingly, we've seen even some of the more hawkish members of the ECB dampen down expectations further out in the year," he added.
The move briefly boosted European government bonds <DE10YT=RR> before the UK retail sales shock reversed that move.
Elsewhere, oil prices eased. U.S. crude <CLc1> lost 65 cents to $136.03 a barrel. (Additional reporting by Jeremy Gaunt, Amanda Cooper, Veronica Brown and Ikuko Kao; Editing by Ron Askew)