Anne Sacoolas should return to Britain to face charges over the death of teenage motorcyclist Harry Dunn, and Prince Andrew should be sent to the US to give evidence over sex offender Jeffrey Epstein, lawyers for the victims in both cases have said.

A lawyer acting on behalf of six women in the Jeffrey Epstein scandal gave a press conference in New York with the spokesperson for Dunn’s family on Wednesday.

Lisa Bloom and Radd Seiger have joined forces to call for both Sacoolas – the suspect charged in relation to Dunn’s death – to return to the UK, and the Duke of York, who has not been convicted of any crime nor officially summoned by police, to face questioning from the FBI in the US.

Bloom said the “parallels between the two cases are eerie” and involved “everyday teenagers” who were “victimised”.

She said: “Today we stand with the family of Harry Dunn and they stand with us. Both Mrs Sacoolas and Prince Andrew must cooperate with law enforcement.

“I call upon my government, the US, to return Mrs Sacoolas to the UK to face justice.”

She said Andrew needs to “answer questions about Jeffrey Epstein and his own behaviour”, adding: “In both countries everyone is equal in the eyes of the law.”

Seiger said he “reached out” to Bloom after realising “that there was a common thread running between these cases.”

He said: “It’s about evasion of justice. These are the two greatest allies in the world and they follow a rules-based system.

“No one, no matter who you are […] is above the law.

“We all break the rules from time to time but we don’t get to walk away and hide.”

Seiger added it was “terrible advice” for Sacoolas and the Duke of York if they are being advised “it’s all going to go away” and they should just “wait it out”.

He said after meeting Kiki, an alleged victim of Epstein also present at the press conference, “what you see every day is a strengthening and stiffening of resolve”.

In a message to Andrew, Seiger said: “If you have nothing to hide get on a plane and meet with Kiki, and help her and help other victims […] there’s no other way”.

He refused to call the proposal a “swap” outright, but spoke of the need for “reciprocity”.

“It can never be a swap but at the heart of extradition treaties is reciprocity,” he said.

“If you want me as a nation to send people you want to prosecute you have to agree to do the same thing.

“It can never be a straight swap but be careful what you wish for.

“If you want people from the UK like Prince Andrew […] you have to think about making sure that treaty is followed to the letter.”

Buckingham Palace has been approached for comment.