Ironically, the place in front of the grieving King Charles III. (73) remained free at the funeral of Queen Elizabeth II (1926-2022). However, this had nothing to do with a last-minute cancellation, according to "Express" there is a royal protocol behind it that leaves nothing to chance.
In fact, this has already been observed at various ceremonies. For example, at the royal weddings of Princess Eugenie (32) with Jack Brooksbank (36) or Prince Harry (38) and Duchess Meghan (41). At the funeral of Prince Philip (1921-2021), however, numerous places remained free for another reason: to comply with the minimum distances applicable at the time due to the corona pandemic.