Charles Spencer, the brother of the late Princess Diana, has voiced his disbelief in the numerous conspiracy theories that have emerged regarding his sister's death. In an interview with People magazine, Spencer stated, "I’ve never believed in the conspiracy theory."

Princess Diana died at the age of 36 in a high-speed car crash in Paris in August 1997. The tragic event fueled a wide range of speculative theories, including claims that the royal family or British intelligence orchestrated her death, and even that she faked her own demise. Prince Harry, Diana's younger son, acknowledged in his 2023 memoir "Spare" that he had, for a time, considered the possibility that his mother had faked her own death.

Spencer elaborated on his perspective, suggesting that if there were a conspiracy to eliminate a high-profile individual like Diana, a car crash would not have been the chosen method. "If somebody was conspiring to kill somebody very high profile like that, I don’t think that would be the manner that it would happen in," he said. He noted that the location and circumstances of the crash were not pre-planned. "First of all, nobody planned for Diana to go through that tunnel that night," Spencer explained. "The fact that it ended up tragically being a car crash, I think, is purely a coincidence."

Spencer, who is currently promoting his upcoming memoir, "Swan Song: Diana, My Sister," also addressed portrayals in popular culture. He specifically refuted the depiction in "The Crown" that suggested King Charles III was deeply affected by the news of Diana's death, stating, "I’ve heard that in ‘The Crown’ for instance, [Charles] is sort of knocked sideways by the news of Diana’s death, and that’s just not true."

He asserted that his intention in sharing these recollections is not out of malice, but rather to present what he considers factual accounts. "I’m not resentful or bitter or any of those things," Spencer said. "It’s just a straightforward fact that that was the case, and I think that’s important for people to know."

Regarding his current relationship with King Charles III, Spencer described it as distant. "I’ve really nothing to do with him at all now," he told People. "I see him as an ex-brother-in-law, and I’m sure anyone who has had divorce in the family will understand that people who were closer in your life when the parties were married are less close."

He further stated that he is not part of King Charles's life, nor is the King part of his. "At the end of the day, family is family, and families have all sorts of energies, tensions, happinesses, and problems. It’s just normal," Spencer concluded.