The Duke and Duchess of Sussex have paid tribute to the Duke of Edinburgh on their Archewell website, which features the words: “Thank you for your service…You will be greatly missed”.
The site has switched to a memorial page with a dark brown background.
It reads simply: “In loving memory of His Royal Highness The Duke of Edinburgh 1921-2021
“Thank you for your service…You will be greatly missed.”
Harry is likely to travel from the US to attend his grandfather’s funeral.
The duke is living in California with the Duchess of Sussex and has not returned to the UK since stepping down as a senior royal just over a year ago.
Funeral arrangements for Philip, who died on Friday morning at the age of 99, have yet to be confirmed, but it is likely Harry will be among the small number of mourners, the PA news agency understands.
It is not known at this stage whether the Duchess of Sussex, who is pregnant with her second child – a daughter, will accompany him.
During England’s national lockdown, funerals can be attended by a maximum of 30 people.
It would be the first time Harry has joined the royal family since Megxit and also since his and Meghan’s bombshell interview with Oprah Winfrey in which they accused the royal family of racism and the institution failing to support a suicidal Meghan.
The two-hour interview was aired while Philip was in hospital after surgery on his heart.
The Queen issued a statement saying “while some recollections may vary”, the issues would be taken “very seriously”, but dealt with privately as a family.
The Duke of Cambridge, in a rare move on a royal engagement, spoke out publicly saying “We’re very much not a racist family”, as the royals’ ability to carry out official duties linked to diversity, inclusion and mental health was called into question.
Harry told Oprah Winfrey that he felt let down by his father the Prince of Wales and that “there’s a lot of hurt that’s happened” between them, and that his relationship with his brother William was “space” but he loved him to bits.
Under current rules, mourners coming from outside England are required to self-isolate from arrival and for the first full 10 days after they arrive.
But Harry would be entitled to leave his place of self-isolation on compassionate grounds to attend the funeral.
He could also be released from quarantine if he gets a negative private test on day five under the Test to Release scheme.
Given his status as a member of the royal family travelling to support the Queen, Harry might be considered exempt from travel restrictions.