By Russell Myers & Alahna Kindred Prince Harry would have gladly accepted an invitation to see his brother Prince William after flying over from California to see his father amid reports the brothers are not set to meet. The Duke of Sussex, 39, landed in London yesterday afternoon, without his wife Meghan Markle, to see King Charles following the shock announcement that the 75-year-old has cancer. Harry cleared his diary to be with his father despite their troubled relationship, raising concerns about the seriousness of the King’s health. Ahead of meeting the King, the Mirror exclusively revea…