Poirot prepares to entertain a guest to tea in the episode The Adventure of the Western Star. Marie Marveille the Belgian film star is expected for tea, Hercule Poirot does some last minute adjustment to ensure the table setting is set with mathematical precision. The china tea set is Royal Worcester Raffles which has an Art Deco style border although it was produced in 1985-86.  Royal Worcester Raffles tea and dinner ware was also used for Bertie Wooster's flat in the Jeeves and Wooster series.

See a selection of Royal Worcester Raffles on eBay