Royal Bank of Scotland was the biggest faller on the FTSE 100 Index today as it continued to come under pressure over its computer glitch crisis.
Its shares fell 4%, or 9.1p to 227.7p, with some in the City estimating the recent IT meltdown could cost the bank tens of millions of pounds.
The wider Footsie lost early session gains to close down 3.7 points at 5,447 amid doubts that a European summit will get to grips with the debt crisis.
Lloyds Banking Group was also in the red, down 0.3p at 30.1p, while broadcaster BSkyB shot close to the top of the risers board after News Corp said it was considering separating its broadcast and print businesses.
The announcement triggered speculation that a renewed bid for BSkyB was now more likely. Shares rose 3%, or 18p to £6.74p.
Other big risers in the Footsie included Shire ahead 55p at £17.98, Croda International up 58p at £21.83 and Tate and Lyle 10.5p higher at 645.5p.
Among the bigger fallers were Arm Holdings off 16.1p at 483.6p, IMI down 21p to £8 and Smiths Group off 22.5p at 979.5p.
In the FTSE 250, delivery firm Ocado suffered another big fall, down 20%, or 22.1p at 86p after it reported a slight improvement in half-year profits but warned current conditions were challenging.
Scottish transport firm Stagecoach Group was up 5%, or 13.7p at 263.5p despite it posting a drop in underlying profits.
Stuart Lamont, of investment manager and financial planning specialist Brewin Dolphin in Aberdeen, noted Faroe Petroleum rising 7.3% to 153.75p and Wolfson Microelectronics up 5.3% at £2.03 as well as Amec down 1.4% to £9.33 and Hunting off 1.4% at 691.5p.