LONDON -- Standard & Poor's Corp. reduced its long-term ratings on Barclays Bank PLC and placed National Westminster Bank PLC on review for a possible downgrading.

The senior debt ratings of Barclays Bank PLC were cut to AA from AA-plus. The subordinated debt rating was reduced to AA-minus from AA, and junior subordinated perpetual debt was cut to A-plus from AA-minus. Some Barclays units were also affected.

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