LONDON: London’s High Court on Monday rejected a claim by campaigners that Britain’s multi-billion-pound arms sales to Saudi Arabia should be halted because they were being used in Yemen in violation of international humanitarian law.

The ruling was condemned by activist groups and charities, with Oxfam saying it “sets back arms control 25 years”, but it was welcomed by the British government.

“I welcome the High Court judgement today ... it shows that we do in this country operate one of the most robust export- control regimes in the world,” British Prime Minister Theresa May told parliament when asked about the ruling.

The Campaign Against Arms Trade (CAAT) had sought an order to block export licences for British-made fighter jets, bombs and other munitions which it said the Saudi-led Arab coalition was using in a campaign against Iranian-backed Houthis in Yemen’s civil war.

An annual report by UN experts who monitor sanctions and the conflict in Yemen, seen by Reuters in January, said the Saudi-led coalition acting in support of the Yemeni government had carried out attacks that “may amount to war crimes”. Riyadh rejects those accusations.

Yemen’s civil war started in 2015, pitting the exiled government of President Abd-Rabbu Mansour Hadi, backed by the Saudi-led coalition, against the Iran-aligned Houthi group, which controls most of northern Yemen, including the capital, Sanaa. The United Nations has put the civilian death toll in the conflict at about 10,000 killed and 40,000 wounded as result of actions by all sides.

CAAT had argued that the government’s decision to allow arms exports to continue to Saudi Arabia, a major customer for British defence companies and an important British ally in countering terrorism, was unlawful.