A fresh and revealing insight into Princess Diana through the personal and intimate reflections of her two sons and her friends and family.
| Actor | Role |
|---|---|
 William, Prince of WalesSelf | Self |
 Elton JohnSelf | Self |
 RihannaSelf | Self |
 Victor AdebowaleSelf - Former Director of Centrepoint (as Lord Victor Adebowale) | Self - Former Director of Centrepoint (as Lord Victor Adebowale) |
| GGraham DillamoreSelf - Gardener of Buckingham Palace | Self - Gardener of Buckingham Palace |
| JJayne FincherSelf - Royal Photographer | Self - Royal Photographer |
| AAnna HarveySelf - Private Stylist of the Royals | Self - Private Stylist of the Royals |
| GGerard McGrathSelf - Aids Patient | Self - Aids Patient |
| WWilliam van StraubenzeeSelf - Friend of Diana | Self - Friend of Diana |
| CCarolyn WarrenSelf - Close Friend of Diana (as Lady Carolyn Warren) | Self - Close Friend of Diana (as Lady Carolyn Warren) |
 Amanda RedmanNarrator (voice) | Narrator (voice) |
 Prince Harry, Duke of SussexSelf | Self |