Set in 1933 As Poirot makes his way to Avondale, a train ticket collector has a lapel pin of the British Union of Fascists with a lightning bolt in a red circle BUF was founded in 1932 by Oswald Mosley (and which later added National Socialists to the name). However that lightning pin design was not used until 1935-40. The British Union of Fascists - 1932 to 1935 used the Italian version of pro-fascism, and other fascists, the fasces.
Rupert Grint (Crome) and Shirley Henderson (Rose Marbury) both starred in the Harry Potter series together as Ron Weasley and Moaning Myrtle respectively.
Both Kevin McNally and Mark Sheppard portrayed characters on Dr Who and Supernatural.
Eamon Farren (Cust) and Anya Chalotra (Lily Marbury) have recently been cast for The Witcher (2019) as Cahir and Yennefer respectively.