<p>King Charles III led a procession behind his mother's coffin as the funeral of Queen Elizabeth II began.<br>The monarch walked alongside his siblings Anne, the Princess Royal, Prince Edward and Prince Andrew.<br>Prince William and Prince Harry followed.<br>As they are no longer working royals, Harry and Andrew were not allowed to don their military uniforms for the sombre occasion.<br>The group processed to Westminster Abbey, where they were joined by their spouses.<br>Prince George and Princess Charlotte also walked with their parents behind the coffin as it moved through the nave of the abbey.</p>