Prince Harry has returned to the spotlight with his presence in the UK as people begin to predict and speculate about his future with the monarchy. The British monarch's youngest son is fifth in line to the throne. Harry is currently behind Prince William and his three children (Prince George, Princess Charlotte, and Prince Louis). For the Duke to become monarch, all four individuals ahead of him would need to leave the line of succession through abdication or other circumstances without leaving heirs.

The idea that Harry could become king stems primarily from interpretations of Nostradamus prophecies by author Mario Reading, rather than realistic succession facts. The theory relies on an interpretation of a 1555 poem hinting that a man "who never expected to be king" would replace the monarch. Under the United Kingdom's constitutional law, Prince William remains the immediate first in line to the British throne. Some interpreters claim this "mysterious reason" means William will be bypassed entirely, leaving the crown to someone unexpected.

While some claim King Charles III will abdicate due to his advanced age and pass the crown straight to his eldest son, others insist that some unexpected complications will prevent William from ever taking the throne. Aside from psychics, the late historical novelist Dame Hilary Mantel famously predicted in an interview with The Times that William would likely be the last ruling British monarch, guessing that public sentiment would shift toward a republic before his son, Prince George, could inherit the crown.

Despite persistent speculation, King Charles is pressing on with royal duties and has made it clear he has no intention to abdicate, vowing to serve his people till the last drop of his blood. The ongoing debates continue to captivate royal enthusiasts worldwide, highlighting the intense media scrutiny surrounding the British royal family and the rules governing succession.