The press reports of Jack Farthing and Heida Reed performing as scene from Poldark II for William and Kate and the Chinese President today at Lancaster House, contain spoilers, so here is an excerpt from Yahoo's report with the spoilers removed.
William, Kate, Mr Xi and Madame Peng were given a sneak preview of a crucial scene from the next series of the hit show Poldark during their tour of British creative talent.
The foursome watched intently as Heida Reed, who plays Elizabeth, and Jack Farthing, who portrays Poldark's nemesis George, argued.
Dressed in period costume and in the sumptuous setting of Lancaster House, they performed an intense scene.
Studio cameras and a sound engineer were also in place to give a sense of a film set and after the scene ended the guests chatted to the actors and Debbie Horsfield, writer and executive producer of the hit show.
William asked ''how's it been down there in Cornwall, windy?'', and Farthing and Reed replied together ''really windy'', with the Duke responding ''all the sound microphones were (probably) blown away''.
After the royals and their guests had left, Ms Horsfield said William had mentioned taking breaks in Cornwall: ''He said he had family holidays there, the weather is notoriously fickle and we do film some scenes in the studios.''