One fan wrote on Instagram: “William is truly his mother’s son. Diana would be so proud of her boy (her soulmate, as she said). We love you, William. Thank you for your incredible work.”
Another fan said: “You truly are your mother’s son! She would be so proud of you and your work! I think we as a country feel you’re upholding her legacy with honour and love.”
One user also commented: “Prince William, well done for following your heart and carrying forward your mother’s legacy. She must be so proud, watching from heaven and cheering you on.
“Ending homelessness was one of her passions, and I’m glad she’s still your advisor, guiding you from above. Hugs to you and your family.”
One person also referred to William as the “People’s King.” They wrote: “People’s Princess and now People’s King. Diana would be so proud.”
The documentary will be in two parts, with the first airing on October 30 and the second on October 31 at 9pm on ITV1 and ITVX, STV and STV Player.