"It was rather strange - in a good way! To go to the White House is a once-in-a-lifetime opportunity... it was a really special day, and I felt very welcomed. At moments like that, you do think, 'My goodness me, this show... has been grasped to people's bosom in so many countries'. You do have to pinch yourself." Downton Abbey star Hugh Bonneville was overwhelmed to attend a gala at the White House earlier this year (12).