Elizabeth Debicki (who will be taking over from Emma Corrin to play Princess Diana) confirmed she will be in seasons five and six of The Crown and led to discussion over how Diana's death in a car crash in 1997 will be handled.
Philip Lawrence (scriptwriter): "I don’t imagine for a moment they’d be so sensationalist as to show the accident. No one needs to see that. It’s the reactions of those left behind."
It is also noted that writing real life tragedy should be dramatic but still respectful and sensitive to those still living (in this case, Diana's family, specifically her sons). The Crown creative team has previously said they try to portray the deaths on the show respectfully.
Another screenwriter said also they just do their upmost to make sure that they didn’t cause pain to anyone.