The family of slain teenager Harry Dunn have called on Esher and Walton MP and Foreign Secretary Dominic Raab to revise his position over the status of Harry's alleged killer.

Harry Dunn's parents wrote to the Foreign Secretary urging him to make an "urgent declaration" revising the existing Foreign Commonwealth Office (FCO) position that 42-year-old Anne Sacoolas had diplomatic immunity when she left the UK for the US shortly after the teenager's death.

The 19-year-old motorcyclist died in a collision with a car outside a US military base in Northamptonshire in August 2019.

Sacoolas, the wife of a US intelligence official based at RAF Croughton, claimed diplomatic immunity following the crash and was able to return to her home country, sparking an international controversy.

She was charged with causing death by dangerous driving in December but an extradition request for her, submitted by the Home Office, was rejected by US secretary of state Mike Pompeo in January.

Parents Charlotte Charles and Tim Dunn wrote to Raab demanding he revise the FCO position that it acted properly in relation to Harry's death and that he also withdraw a statement made in the House of Commons last October asserting that Sacoolas had diplomatic immunity - describing it as "misleading".

Previously disclosed documents showed that a senior diplomat at the FCO had sent a text message to their US embassy counterpart saying they should "feel able" to put the suspect on the next flight home.

The material also showed a briefing note copied to Raab's private secretary from three days after the fatal crash which revealed concern for some "very unpalatable headlines".

Speaking on behalf of the family after the letter was sent to the Foreign Secretary, their spokesman Radd Seiger said: "It is now time the UK Government put the interests of its citizens above anything else.

"Anne Sacoolas never had diplomatic immunity, yet the UK Government rolled over under pressure from the US government and agreed that she did, unlawfully.

"Raab misled Parliament when he spoke in the House of Commons on October 21 and he must now withdraw that statement and I have invited him to do so.

"We cannot bring Harry back. But we can help alleviate some of their suffering by ensuring they get the justice they deserve, that every single one of us are entitled to.

"Mr Raab must now urgently seek an order from the High Court in London that Anne Sacoolas did not have diplomatic immunity, then formally demand that the US Government return her to face justice."

Responding to the family's requests, a spokesman for the FCO said: "As the Foreign Secretary set out in Parliament, Anne Sacoolas had diplomatic immunity while in the country under the Vienna Convention on Diplomatic Relations.

"The decision to withdraw the family was taken by the US. The FCO consistently called for Anne Sacoolas' immunity to be waived, but neither the FCO nor the police could have lawfully prevented her leaving the UK.

"The Prime Minister and Foreign Secretary have been clear with the US that their refusal to extradite Anne Sacoolas amounts to a denial of justice and she should return to the UK."