By Sara Sjolin and Carla Mozee, MarketWatch

LONDON (MarketWatch) -- The U.K.'s FTSE 100 index fell on Monday, extending losses into a fifth straight week.

The benchmark index dropped 0.7% to 6,267.07 after closing lower for a fourth straight week on Friday amid a wider rout in European markets. European stocks were also on the decline on Monday.

"Where markets go now is anyone's call, but it does seem as if the underlying volatility that had been elusive for some months is now back with us," said Tony Cross, market analyst at Trustnet Direct, in a note.

Telecoms and the consumer services group were the only two of 10 sectors that registered gains. Travel stocks gained after a rough ride in recent sessions. Shares of InterContinental Hotel Group gained 4.3%, TUI Travel PLC rose 3% and British Airways parent International Consolidates Airlines picked up 3.1%.

But shares of Petrofac Ltd. lost 2.8%. The oil-field-services provider leapt 7.3% on Friday saying it is on track to meet its full-year profit expectations.

Shares of Shire PLC fell 0.8% after the drug maker said its chief financial officer James Bowling is stepping down to join Severn Trent PLC .

In other developments, the automated system used to shift billions of pounds a day between banks was hit by a technical problem, resulting in the delay of U.K. purchases of houses and other big transactions. The glitch in the Real Time Gross Settlement Payment System was related to routine maintenance work. The problem has been resolved, said the Bank of England on Monday, adding that it would continue working through 8 p.m. London time to ensure settlement of transactions.

The central bank said earlier the "most important payments" were being made manually, and all payments made Monday would be processed.

The outage of the RTGS affected the Clearing House Automated Payments System, or CHAPS, which handles large transactions including payments for house purchases. CHAPS in a separate statement said was extending operational hours through 7:40 p.m. London time. CHAPS processed more than GBP70 trillion pounds ($113 trillion) last year, an average of GBP277 billion a day.

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