THE UK is guilty of a “serious foreign policy failure” after failing to secure the re-election of a judge to the International Court of Justice (ICJ), MPs say.

Fifteen elected judges sit on the panel of the institution, which is based at The Hague in the Netherlands and handles disputes between countries. However, the body will sit without a UK judge for the first time in its creation when Christopher Greenwood’s nine-year term comes to an end this month. The change will end more than 70 years of British input.

In a report released today, the cross-party Foreign Affairs Committee says this will damage the UK’s international influence and future foreign policy strategy.

It states: “The committee has heard a number of possible reasons why the UK’s election campaign ended in failure. The most concerning was that it was an indication that the international standing of the UK had diminished, and specifically that there had been a fall in what Lord Hannay, former UK Permanent Representative to the UN, called the ‘trepidation index’—the extent to which other countries worry about trampling on the UK’s toes.”

Turning to Theresa May’s Brexit vision of “Global Britain”, it says this “must emphasise its commitment to the international rule of law, one of the UK’s strengths as a global player,” adding: “This makes the loss of the UK judge particularly damaging, and worrying. It is bad enough that the UK will not have a judge for this term; a longer absence from the ICJ would be seriously damaging to UK interests.

“Ministers must set a clear priority for the UK’s Mission to the UN that it secure the election of a UK candidate to the ICJ at the next opportunity.

“Without the advantage of incumbency, this is likely to require serious and sustained diplomatic effort by the Government as a whole, both in New York and elsewhere.”

The UK withdrew Greenwood – who advised Blair’s administration prior to the 2003 Iraq invasion – as an ICJ candidate moments after the 11th round of voting started at the UN in New York in November. The move ended a run-off with India’s candidate Dalveer Bhandari, who filled the final spot.

Although Greenwood had secured backing from the UN Security Council, his support in the General Assembly waned over a series of votes.

Tom Tugendhat, the Tory chair of the Foreign Affairs Committee, called the situation “deeply concerning”.

Referring to Hannay’s “trepidation index” and calling on the Foreign and Commonwealth Office (FCO) to act, he added: “We hope this is not the case and call on the Government to evaluate our standing properly and think about how we must shape our actions to maintain and augment our ability to promote the interests of the British people and our allies.

“The FCO must ensure the UK’s position within the UN is not at risk. Worryingly, it appears this loss came as a surprise to the FCO. Ministers have assured the committee that the department will carry out a ‘comprehensive lessons learned exercise’.

“We urge ministers to share their findings with the committee. With the UK’s international standing at stake, the FCO should be setting out exactly how they will address this setback.”

An FCO spokeswoman said: “As we said at the time, we were disappointed that our candidate was not successful. Sir Chris Greenwood is an outstanding lawyer and academic with a wealth of experience, but it was a highly competitive field with six strong candidates and we congratulate the successful and well-qualified Indian candidate.

“The UK remains a founding member of the UN, a permanent member on the Security Council and the UN’s third-largest donor.

“We will continue to shape and influence the global agenda for a safer and more prosperous world.”