By Emma Mackenzie The last few months have been a difficult time for the Royal Family, but in a significant update and major boost to the monarchy, Buckingham Palace has announced that King Charles has progressed well enough during his cancer treatment to return to some public duties. And there might be another bright spark coming up in the weeks ahead. Prince Harry is set to head back to his home country for a special anniversary service marking 10 years of the Invictus Games at St Paul’s Cathedral. The last time Harry visited the UK was for a brief trip to see Charles back in February after …