Britain lowered its security risk level for U.K.-flagged ships traveling through the Strait of Hormuz Thursday, more than a month after one of its tankers was finally released from detention by Iran.

The Stena Impero was seized in July by Iran's Revolutionary Guard in the strait, a major oil shipping route, for alleged marine violations two weeks after Britain detained an Iranian tanker off Gibraltar.

The U.K. Chamber of Shipping said it had been calling for a de-escalation of tensions in the Strait of Hormuz and welcomed the news that British-flagged ships would soon be able to transit the area without close Royal Navy protection.

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