By Emma Mackenzie With both Princess Kate and King Charles being treated for cancer, and unable to undertake public royal engagements for a time, Queen Camilla and Prince William were left as the two most senior working royals to help steer the ship in the monarch’s absence. However, in a major update on the King’s health Buckingham Palace has announced that Charles will be able to return to public duties – although going forward his schedule will be managed carefully and it won’t be a full return at this stage. The King’s “doctors are sufficiently pleased with the progress made so far” a pala…