Zara Tindall, Princess Beatrice, Princess Eugenie and Lady Louise Windsor could feel “forced into royal duties” after “years out of the limelight”, a PR expert has claimed. King Charles’s nieces have never performed official duties, only appearing at mass family gatherings in a private capacity. However, with the King’s and Princess Kate’s current cancer diagnoses, some commentators have suggested that the monarch’s nieces and nephews should undertake royal duties to fill gaps in the diary. The current working royals are mostly over the age of 60, except for Prince William, aged 41, and Sophie…