Although there is no state funeral, in accordance with the Duke of Edinburgh's wishes because of the coronavirus pandemic, and only 30 guests have been allowed at the service, many people have been offering virtual condolences.
Watch: Ceremonial Unit of British Army Rides Toward Windsor Castle Ahead of Prince Philip's Funeral
Minogue shared photos of the time she had been invited to receive the Britain-Australia Society Award, which Prince Philip was patron of, in 2017, tweeting: "RIP HRH Prince Philip. What an honour it was to meet at Windsor Castle."
One Direction star Liam Payne surprised his fans with his artistic talent as he shared a watercolour painting he had made of Prince Philip in military uniform on his Instagram stories, writing: "Rest in peace HR Prince Philip small tribute to you, thank you for your service."
He later reshared the finished version of his painting, which he said he had added the last touches to during the funeral service.
Former Good Morning Britain host Piers Morgan, who was ousted from the show after his comments about Meghan Markle following her Oprah Winfrey tell-all interview with Prince Harry, also paid his respects.
He tweeted: "Thinking of The Queen today as she says goodbye to the love of her life."
Morgan also added his thoughts to Instagram, writing: "The Queen, who has devoted her life to selfless public service, will be forced to sit all alone during the funeral of her husband of 73 years, due to covid restrictions. How heartbreakingly sad."
Darcey Bussell shared a photo of herself meeting Prince Philip, adding that she was backing a campaign to encourage more young people to sign up to the Duke of Edinburgh Award.
She wrote: "In memory of Prince Philip I’m backing the effort to get one million more young people doing their DofE to show the potential today’s youth have. They are the leaders of today, tomorrow and the future."
Fearne Cotton also offered her condolences, sharing that she was heartbroken by images of the Queen mourning.
She wrote: "The shots on the BBC of Her Majesty The Queen alone are breaking my heart in two. A beautiful ceremony. A long, amazing life celebrated so perfectly."
The poignant images had an effect on many who saw them, with TV rivals Piers Morgan and Dan Walker both sharing similar sentiments about the Queen having to grieve alone.
During the BBC's coverage of the funeral, Sir David Attenborough shared his memories of having worked with the Duke of Edinburgh on conservation projects.
He said: "He spoke with a passion...he cared about it, but he also knew about it a lot.
"If people are aware that there are problems (with wildlife conservation), a great deal of that is due to him."
Alan Titchmarsh also shared a humorous letter Prince Philip had sent him about his hobbies, which included shooting, carriage driving and polo, as part of the programme.
The funeral is taking place at St George's Chapel in Windsor Castle, where key members of the royal family will mourn the Queen's husband of 73 years who was the longest-serving consort of a British monarch.
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