The wife of a US diplomat is due to face a London court hearing next month over a fatal car crash in England in a case that led to diplomatic tensions between Britain and the United States.

Harry Dunn, 19, died after his motorcycle was in a collision in August 2019 with a car driven by Anne Sacoolas near RAF Croughton, an air force base in the English county of Northamptonshire that is used by the US military.

Sacoolas left Britain shortly after the accident, claiming diplomatic immunity from criminal prosecution...