PRAGUE, Oct 6 (Reuters) - The European Union is considering slapping additional sanctions on Iran, EU foreign policy chief Josep Borrell said on Thursday, as rights groups say thousands have been arrested and hundreds injured in a crackdown by Iranian security forces.

EU foreign ministers will discuss further sanctions on Iran at their next meeting, Borrell told reporters in Prague.

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More large British companies view borrowing as expensive than at any time in the past decade, due partly to financial market turmoil caused by the government's "mini-budget", according to a survey published on Monday.

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