LONDON’S leading index ended another rollercoaster week deep in the red again as Britain’s biggest banks wobbled ahead of a key report on sector reform.

The FTSE 100 Index fell by 2% or 125.7 points to close at 5214.7 as brokers warned the Independent Commission on Banking’s final report, out on Monday, would badly hit the industry.

Any optimism inspired by US president Barack Obama’s expected 280bn jobs package proved short-lived as the Dow Jones Industrial Average fell by more than 2%.

The resident’s plans were overshadowed by a speech by Federal Reserve chief Ben Bernanke in which he offered no clues on further economic support.