Dunn’s parents refused access to papers

The High Court has refused an application by Harry Dunn’s parents for the Foreign Office to disclose evidence relating to a “secret agreement” between the UK and US governments which is said to have given diplomatic immunity to their son’s alleged killer.

Charlotte Charles and Tim Dunn are bringing legal action against Foreign Secretary Dominic Raab and also Northamptonshire Police, claiming they acted unlawfully over the departure of Anne Sacoolas from the UK.

Mr Dunn, 19, was killed in August last year when his motorbike was involved in a collision

“We do not consider any of the documents necessary”

with a Volvo outside RAF Croughton in Northamptonshire.

Sacoolas, whose husband Jonathan worked at the base, claimed diplomatic immunity and was able to return to the US.

The 42-year-old was charged with causing death by dangerous driving in December but an extradition request was refused by the US the following month.

After a preliminary hearing conducted remotely by video call, Lord Justice Flaux and Mr Justice Saini rejected the application for the Foreign Office to disclose further evidence ahead of a full hearing.

Lord Justice Flaux said: “We do not consider that any of the documents sought is necessary for the fair and just determination of the issues in the case, so that application is refused.”

The court also refused an application to rely on expert evidence from Sir Ivor Roberts.

The court directed that a full hearing of Mrs Charles and Mr Dunn’s case will be heard in October or November.