Narrated by Kate Winslet, the programme recounts the day of Lady Di's funeral from the experiences of guardsmen, reporters, pallbearers and more as they share the sights and sounds of that day, some speaking publicly about the day for the first time. The special also reveals how one of the funeral's signature moments - Elton singing Goodbye England's Rose - almost didn't happen, because officials at Westminster Abbey objected to the lyrics of the original, Candle in the Wind.
As the 20th anniversary of Princess Diana's passing approaches, TV executives have been taking note.
Among the offerings will be the Smithsonian Channel's Diana: The Day We Said Goodbye, airing on August 27, at 9 p.m. ET/PT.
Well before this, HBO and ITV will run Diana, Our Mother: Her Life and Legacy on the 24th of July. It contains interviews with both of her sons, who pay tribute to the many ways her influence has shaped their lives.
Other participants include Elton; Charles Edward Maurice Spencer, 9th Earl Spencer; Rihanna; Royal Photographer Jayne Fincher; personal stylist Anna Harvey; and Kensington Palace Gardens Manager Graham Dillamore.
The 90-minute film can be seen at 9 p.m. in the UK, and at 10 p.m. ET/PT in the States, on HBO.