Charlotte Charles, left, the mother of teenage motorcyclist Harry Dunn who was killed in a collision with a car by US citizen Anne Sacoolas, stands beside her husband Bruce Charles, right, as they speak to members of the media before a meeting with Britain's Foreign Secretary and First Secretary of State, Dominic Raab at the Foreign and Commonwealth Office in central London on Jan 27, 2020. (PHOTO / AFP)

LONDON - Britain has agreed with the United States to remove an “anomaly” which allowed the wife of a US official to claim diplomatic immunity from criminal prosecution after she was involved in a road accident in which 19-year-old Briton Harry Dunn was killed.

The crash last August has caused friction between London and Washington after Britain criticised the United States for refusing to extradite Anne Sacoolas.

It’s important that we have now agreed with the US new arrangements that have closed the anomaly that led to the denial of justice in the heart-breaking case of Harry Dunn.

Dominic Raab, Britain’s foreign minister

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Now the loophole that allowed Sacoolas to claim immunity has been closed.

Britain’s foreign minister Dominic Raab said that under new arrangements, the criminal prosecution of family members of American staff working at the Croughton Annex military base in central England would be permitted.

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“It’s important that we have now agreed with the US new arrangements that have closed the anomaly that led to the denial of justice in the heart-breaking case of Harry Dunn,” Raab said in a statement.

Dunn’s family have said Sacoolas was driving on the wrong side of the road at the time of the crash, near the air force base in Northamptonshire which is used by the US military.

Sacoolas left Britain shortly after the accident. Her lawyer has said that she will not return voluntarily to potentially face jail for “a terrible but unintentional accident”.