The Duke and Duchess of Sussex have bowed out from the royal family with a message about the coronavirus crisis and a vow to work out how they can "best contribute".

Harry and Meghan have moved to the United States with baby son Archie to start a new chapter of their life and from today will no longer be working members of the British monarchy.

The duke and duchess's desire to earn money while remaining members of the royal family was unworkable and so they chose to leave and become financially independent.

The couple signed off from their life officially supporting the Queen with a final post on their Instagram account, which will now remain inactive along with their website.

The duke and duchess said: "As we can all feel, the world at this moment seems extraordinarily fragile.

"Yet we are confident that every human being has the potential and opportunity to make a difference - as seen now across the globe, in our families, our communities and those on the front line - together we can lift each other up to realise the fullness of that promise.

"What's most important right now is the health and wellbeing of everyone across the globe and finding solutions for the many issues that have presented themselves as a result of this pandemic.

"As we all find the part we are to play in this global shift and changing of habits, we are focusing this new chapter to understand how we can best contribute."

It appears the Covid-19 outbreak has prompted the couple to postpone announcing the new name of their Sussex Royal brand, after the Queen and her senior officials were said to have ordered them to drop the use of the word "royal" because it could have led to accusations they were cashing in on their family status.

The Sussexes agreed to the change, but appeared to show their dissatisfaction, with their website previously stating that the monarchy had no jurisdiction over the use of the word "royal" overseas.

A spokeswoman for the couple said the Instagram post marked their transition today from working members of the royal family to financial independence which will see them no longer use their HRH styles.

She said: "The Duke and Duchess of Sussex would prefer that in the immediate weeks and months, the focus remains on the global response to Covid-19."

"The Duke and Duchess of Sussex will spend the next few months focusing on their family and continuing to do what they can, safely and privately, to support and work with their pre-existing charitable commitments while developing their future non-profit organisation."

Harry and Meghan were forced to disclose they had put in place "privately funded security arrangements" for their move to the US after President Donald Trump said his country would not pay for their protection.

A spokeswoman for the Sussexes took the unusual step of commenting about their protection plans after Mr Trump said in a tweet on Sunday: "Now they have left Canada for the U.S. however, the US will not pay for their security protection. They must pay!"

In response the spokeswoman said: "The Duke and Duchess of Sussex have no plans to ask the US government for security resources.

"Privately-funded security arrangements have been made."

The couple have moved from their exclusive Vancouver Island home to Los Angeles, where Meghan was born and raised, and where her mother Doria Ragland still lives.

They are now said to be living in lockdown close to Hollywood, in accordance with California's Covid-19 containment measures.

Harry and Meghan's new royal foundation was due to be launched in the spring but a spokeswoman for the couple said the "winding up process has begun". It is now expected a new non-profit organisation will be launched at some point in the US.