King Charles’ “advancing years” mean he feels less of a need for birthday celebrations. The monarch turns 76 on 14 November and has written a personal letter to the Military Wives Choirs to express his “warmest possible gratitude for your very kind early birthday present” after they recorded new single ‘November Sunday’, which was release last week, to mark the occasion. According to the Daily Telegraph newspaper, Charles told the group he had been “deeply touched by your wonderfully thoughtful tribute”. He added: “While those of us of a certain age may feel the need for any such birthday cele…