By Rebekah Curtis
LONDON, May 13 (Reuters) - British blue-chip shares reversed early gains to drop by more than 1 percent by midday on Tuesday, as surging UK inflation data cast shadows over the UK economic outlook and credit-related writedowns hit Alliance & Leicester.
By 1030 GMT, the FTSE 100 <
> was down 61.3 points at 6,159.3 points, as shares across Europe, earlier supported by overnight gains in U.S. and Asian markets, gave up their early advances.The ratio of declining stocks to advancers on the FTSE was about nine to one.
Britain's consumer price inflation rate leapt by its biggest amount in nearly six years, to a full point above the central bank's 2 percent target, as food and fuel bills soared.
That put Bank of England Governor Mervyn King a whisker away from having to write to the government explaining how he plans to bring inflation back to target, and will likely severely dent expectations of further interest rate cuts.
"The concern is we are now about to enter a period of high inflation and much slower growth," said Jeremy Batstone-Carr, head of private client research at Charles Stanley.
"But obviously, by not cutting interest rates any more, the risk is that the UK economy goes through a period of even slower growth and possibly flirts with recession, so what we can say is that the (Bank's) Monetary Policy Committee is probably facing its toughest period since it was instituted.
"It's absolutely important that the Bank of England does not blink, it needs to hold its nerve."
Topping the FTSE 100's <
> percentage losers, Alliance & Leicester <ALLL.L> fell by nearly 11 percent after taking a 192 million pound ($376 million) hit to profit from assets tarnished by the credit crunch, taking its profit in the first four months to below 2007 levels.The bank, which warned in February it could leave its dividend unchanged in 2008, said on Tuesday it was still too soon to decide on the payout.
Also in the sector, HBOS <HBOS.L> shed 5.1 percent, Lloyds TSB <LLOY.L> fell 2.8 percent and Barclays <BARC.L> lost 2.5 percent.
MORE MACRO GLOOM
British retail sales values fell for a second consecutive month in April, suggesting tighter credit conditions and rising household bills are forcing consumers to tighten their belts. [
]"The (stock market) rebound has been based entirely on a perception that the worst is over and confidence might be returning. But as the economic slowdown gathers pace, I think it would be premature to say the worst is over," Batstone-Carr said. "One has to proceed with extreme caution at this moment."
The FTSE has fallen by more than 4.5 percent this year, but has performed better than the pan-European FTSEurofirst 300 index <
>, which has fallen by about 10 percent and is among the top performing national indexes in Europe in 2008.TUI Travel <TT.L>, Europe's biggest travel firm, added 1.5 percent to lead FTSE 100 gainers after saying demand for summer holidays remained strong as it reported a lower first-half loss. [
]Imperial Tobacco <IMT.L> added 2 percent after Morgan Stanley lifted its price target on the stock to 3,050 pence from 3,000 pence.
Oil shares also reversed early gains to weigh on the index. The sector lagged as U.S. crude oil fell below $124 a barrel after the International Energy Agency cut its forecast for world oil demand growth and investors took profits after a rally to record highs the previous day.
On the downside, ITV <ITV.L> shed 4.6 percent after Goldman Sachs downgraded the stock to "sell" from "neutral" and added it to a pan-European sell list.
Also on the economic agenda, investors awaited U.S. retail sales data for April at 1230 GMT. (Editing by David Hulmes)