Allerton Mcnaught is a non-canonical character created for the 2022 Kenneth Branagh adaptation of Death on the Nile. He is one of the crew members of the Karnak.
Allerton appears in many scenes throughout the show. He is seen, for example, serving welcome drinks to the passengers as they board the boat. Later he is seen dancing with the passengers and crew members during the dancing scene. He is also seen handling the bundle comprising a scarf, a handkerchief and a pistol which had been recovered from the bottom of the river. At the end of the film Allerton is among the boat crew (all those who are credited) who fall in on deck to farewell to the guests as they disembark. The name "Allerton" is a nod to Tim Allerton from the original novel. "Mcnaught" is a nod to Captain McNaught from the stage play adaptation Murder on the Nile.
Allerton Mcnaught is portrayed by Francis Lovehall.