Harry, also known as the Duke of Sussex, wants to be able to pay for the protection, saying his private security team in the U.S. doesn't have adequate jurisdiction abroad or access to U.K. intelligence information.
During a hearing at the High Court in London, Harry's lawyer, Shaheed Fatima, said the prince "does not feel safe when he is in the UK given the security arrangements applied to him."
"It goes without saying that he does want to come back to see family and friends and to continue to support the charities that are so close to his heart," she said. "Most of all, this is and always will be, his home."
A lawyer representing the British government, Robert Palmer, called Harry's claim "unarguable and unmeritorious."
Palmer said in a written submission that Harry's offer to pay for police security was irrelevant because "personal protective security by the police is not available on a privately financed basis."