A group of MPs has recommended that Parliament should be able to block future political appointments to ambassador roles, following problems with Lord Mandelson's appointment as Ambassador to the United States.

The Foreign Affairs Committee, led by Dame Emily Thornberry, wants politicians put forward for these top diplomatic posts to face a public hearing first. MPs would then be able to stop an appointment if they felt the person didn't meet the right standard. This power would only apply to people from outside the civil service — career diplomats promoted from within would not need this approval.

What went wrong

Lord Mandelson's appointment in 2026 caused significant disruption. The committee found that security clearance was handled in a chaotic way, with officials treating the vetting process as less important than the political decision to appoint him. Sir Olly Robbins, the permanent secretary at the Foreign Office, was sacked by the Prime Minister over how he managed the situation.

Dame Emily was blunt: she called the appointment "an unmitigated disaster for the country."

What the committee wants to change

The report recommends several practical fixes House of Commons paper HC 504.

First, security clearance must happen before any public announcement. In Lord Mandelson's case, the process was reversed — he was announced first, then officials scrambled to clear him.

Second, there should be a proper, written process for political ambassador appointments. Right now, the committee says it's made up as it goes along.

Third, the Prime Minister should consult both the Foreign Secretary and the head of the Foreign Office before making a political appointment of this kind. This check appears not to have happened, or at least nobody recorded it.

The committee also criticised record-keeping at Number 10 and the Foreign Office as "appalling." Without proper files, Parliament cannot look back later and check what was really said or done.

The bigger picture

This recommendation touches on a fundamental question: who decides who becomes ambassador? Traditionally, the Prime Minister has had complete control. Giving Parliament a veto would shift that balance. It's a genuine check on executive power — something that doesn't happen very often.

The government has said it has already made some changes to how political appointees are vetted. How much those changes match what the committee is asking for remains unclear. Select committee recommendations carry weight, but ministers do not have to accept them.

The committee was also careful about Lord Mandelson's own behaviour. He may not have answered every question truthfully during the process. A public hearing would have created a record of what he said at the time — something that could be checked later against new evidence.