Prince harry queen
Britain's Queen Elizabeth and Prince Harry attend the Chelsea Flower Show on press day in London, May 18, 2015. REUTERS/Julian Simmonds/pool

Queen Elizabeth II's illness has sparked concerns over who will sit on the British throne after the longest reigning monarch's death. While there is the highest possibility of Prince Charles becoming the new king, his younger son seems too far in the line of succession to take the throne.

In case of the queen's death or abdication, Prince Charles will sit on the throne, as in Britain, the crown is normally passed on from the monarch to the eldest son. Prince William is next in line to the throne after his father Prince Charles' death or abdication. As the Duke of Cambridge has two children, the crown will next pass on to his children rather than to his brother, Prince Harry.

Prince William and Kate Middleton's son Prince George is third in line to the British throne, following which the crown will pass to Princess Charlotte.

While Prince Harry is fifth in line to the throne, his chances to sit on the throne may be pushed forward if Prince George has children. Prince Harry may move further down the line if Prince William and Middleton have more children in the future.

In 2016, the 32-year-old had reportedly said that he never expects to be the king. While visiting a primary school in Berkshire at the time, a boy asked Prince Harry: “Are you ever going to be King?”

“That's the question everybody wanted, let's be honest!” laughed the Prince, adding: “You'll be glad to know, probably not!”

Last year, William and Harry’s former bodyguard Ken Wharfe reportedly said Prince Harry would “make a remarkable king,” lamenting, “but sadly that isn’t going to happen.”