Meanwhile, the Financial Times reported Friday that government officials are worried that RBS, 83% owned by taxpayers, may need additional support depending on the outcome of a review of the industry by the European Banking Authority.
In the stress tests if 91 European banks in July, RBS was among those institutions in the so-called gray area with a "stressed" capital ratio of 6.3%.
In its half-year report, RBS said it had cut its exposure to Greek sovereign debt by 50%.
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