It was a day when the nation stood still and the rest of the world could only watch.
The funeral of Diana, Princess of Wales in 1997 was, even by traditional royal standards, a massive event.
Her death following a car crash in Paris that August sent shock waves around the globe, and the subsequent ceremony saw more than a million lined the route taken through the streets of London by her funeral cortege.
Many had already laid floral tributes at the gates of Buckingham Palace and Kensington Palace in her memory, a deluge of flowers piled several feet deep and enough to fill numerous football pitches.
32 million people in Britain, along with an estimated 2.5 billion worldwide, watched at home as heart-breaking images were broadcast of her young sons William and Harry following along behind her coffin, which was famously placed on a gun carriage draped in the Royal Standard, with three wreaths of white flowers.
Around 2,000 people also filled Westminster Abbey to pay their last respects.
And, just five years later, an estimated 200,000 people would file past the coffin of the Queen Mother over the three days she lay in state at the Palace of Westminster.
More than a million people lined the procession route of her coffin, which was carried on the same gun carriage used for her husband George VI's funeral 50 years before.
Her funeral itself had 2,200 guests and the tenor bell at Westminster Abbey sounded 101 times - one for every year of her life - before the ceremony began.
However, by contrast, the Duke of Edinburgh's send-off - codenamed Operation Forth Bridge - will be a far more scaled back affair - in accordance with his wishes.
One of the smallest of its kind in living memory for a senior member of the British monarchy, just 30 people will be permitted to attend the service on Saturday April 17 due to Covid-19 restrictions - as opposed to the initially planned 800 mourners.
There will be no lying in state -something that is likely to suit Philip, who never wanted a large affair - the low-key ceremony instead taking place entirely in the grounds of Windsor Castle, with members of the public advised to stay home and watch it on TV instead.
There will be a nationwide minute's silence as it begins at 3pm.
Afterwards the duke's body will be conveyed to the nearby St George's Chapel in a custom-made Land Rover he helped design.
The vehicle will be flanked by pallbearers drawn from the likes of the Royal Navy, Air Force and the Army, with all of which he had special relationship.
On foot behind the vehicle will follow The Queen, Philip's wife of 73 years , and the couple's eldest son Prince Charles.
While it's not been confirmed which others members of the royal family will be attending, Prince William and Kate Middleton are also expected to be present, while Prince Harry is said to be flying back from his new home in the US to pay his last respects.
However, Harry's wife Meghan Markle has already announced that she will not be accompanying him upon medical advice - the 39-year-old actress being pregnant with the pair's second child.
Prime Minister Boris Johnson also won't be turning up, a statement from Number 10 having confirmed that he's elected to forego his place at the funeral in order to allow as many family members as possible to attend.
Under current guidelines though, all those who are there on the day will have to wear face masks and practice social distancing.
