By Barbara Kollmeyer, MarketWatch

MADRID (MarketWatch) -- Marks & Spencer Group PLC stood out with gains on a mostly losing day for retailers after more downbeat news over Christmas sales, while the Bank of England's Monetary Policy Committee held tight on interest rates and quantitative easing on Thursday.

The FTSE 100 index gave up earlier gains, moving to flat at 6,724.30, with support coming from a 0.8% gain for BP PLC (BP) .

Pharmaceutical stocks also provided some inspiration, with GlaxoSmithKline PLC (GSK) up 1.3% after a combination treatment for a deadly skin cancer won accelerated approval from the U.S. Food and Drug Administration.

Shares of AstraZeneca PLC (AZN) rose 1.2% after a diabetes pill produced with Bristol-Myers Squibb Co. (BMY) won approval from the FDA.

The Bank of England's Monetary Policy Committee left its interest rates and quantitative easing policies on hold earlier. Speculation had been rising that a fall in unemployment could trigger a change in the bank's forward guidance, something that has fueled gains for the British pound.

The European Central Bank also left policy unchanged, with a presser due to get underway from its president Mario Draghi.

Retailers were commanding much attention on Thursday. Shares of Wm. Morrison Supermarkets PLC sank 7.5% after the retailer became the latest to report a challenging Christmas trading performance. It said full-year underlying profit would be at the bottom of the range of current market forecasts.

J. Sainsbury PLC shares dropped 2.4% and Next PLC, while Tesco PLC dropped 0.6% after the company said comparable U.K. sales fell by 2.4% in the six weeks to January.

Marks & Spencer Group PLC fared better with a nearly 4% gain, the top riser for the FTSE 100. The retailer said it saw an improved performance for general merchandise over the holidays, with U.K. comparable sales down 0.2% in the third quarter, but up 1% in the Christmas trading period. Still, the quarterly performance fell below expectations, said Marks & Spencer.

"Putting the disappointing numbers aside, the macro improvement in the UK economy clearly isn't being reflected for the consumers who remain cash-strapped as wage rises are not up with inflation," said Joe Rundle, head of trading at ETX Capital. "Shoppers in the U.K. are now more sensible in the way they purchase their food items -- either picking the higher end, [Waitrose for example and even Sainsbury's to some degree] or the low-end [Aldi and Lidl -- both reporting strong Xmas trading numbers]."

"For M&S, Tesco and WM Morrison, it's the outlook for these retailers which worries the market -- unlike Waitrose and Sainsbury's, these three have questionable strategies which are now under intense scrutiny by shareholders and the market alike," Rundle said in a note.

ARM Holdings PLC (ARMHY) was cut to hold from buy at Deutsche Bank, which says it's waiting for better entry points for the chip designer. Shares of the heavyweight sank 4.2%.

More news from MarketWatch:

Need to Know: Alcoa, jobless claims and the return of the bubble-pop bunch

Are hedge funds run by communists?

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

ARM Holdings (LSE:ARM)
Historical Stock Chart
From Jun 2024 to Jul 2024 Click Here for more ARM Holdings Charts.
ARM Holdings (LSE:ARM)
Historical Stock Chart
From Jul 2023 to Jul 2024 Click Here for more ARM Holdings Charts.