Overall, RBS said it expects to "significantly outperform its previous guidance of circa £1billion of total impairments" the the 2014 year. However, the lender also notes corporate and institutional banking revenues have been "weaker than anticipated in the third quarter". RBS said stated: "Previously disclosed uncertainties remain, particularly relating to conduct and litigation matters." The bank said it took advantage of improved market prices to dispose of circa euro 9 billion (£7 billion) of debt securities which generated a central revenue loss of around £200 million. "We expect these transactions to be moderately capital ratio accretive," RBS added. RBS said there had also been an absence of large one-off impairments and lower levels of new non-performing loans across the business in the third quarter. The bank said the figures quoted in the unscheduled update "are preliminary estimates and unaudited" and will release an interim management statement on October 31.