Carney warns UK banks might need more capital

UK banks scraped through the latest stress tests with no need to raise capital, but add a disorderly Brexit onto recession and overseas investor flight, and they could face serious trouble.

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Bank of England governor Mark Carney on Tuesday

There’s an art to conducting stress tests if you’re a banking regulator that wants to take credit for bolstering financial system stability.

You want the tests to look really tough, but for most banks still to pass them. If too many large ones fail then that will simply spread investor panic and invite criticism of the regulator for not knocking banks into shape, but if the tests look too easy then both their pass marks and the examiner lose credibility.

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