Prince Harry traveled from California to the United Kingdom to attend a court hearing on what could be his last chance to change the U.K. government's stance on his security.

The Duke of Sussex arrived at a London court on Tuesday to challenge the British government’s decision to downgrade his level of taxpayer-funded security while he is visiting the United Kingdom.

The Duke of Sussex is contesting a decision to change his security status after he stopped being a working royal.

Britain's Home Office has ruled against giving Prince Harry the highest level of security protection when he is in the United Kingdom after he stepped down from as a senior royal in 2020. His lawyer is now arguing that the decision puts his life in danger.

Prince Harry's decision to step back from his life as a working royal resulted in a "unique set of circumstances", a government barrister has told the Court of Appeal. Sir James Eadie KC said it was right to take a flexible approach to the level of personal security he should be given after he stepped back in early 2020.

Prince Harry's lawyer warned his "life is at stake" over changes to his security after he stepped down from royal duties, as the prince returned to London's Royal Courts of Justice on Wednesday for his appeal about changes to his protection in Britain.