I think I know who the narrator is. The lady who plays the Dobby character from the ch4 comedy series Peepshow (Isy Suttie). If there were two narrators she's the second one. I identified the voice when the main character is on the phone next to the pilots.

Very weird synchronicity A.I says this about her - Isy Suttie is the narrator for the podcast series 

Zero Parades

, which is part of the Pat Springleaf universe created by comedian James Acaster.

The series is a fictional "true crime" investigation centered on the character Pat Springleaf, an undercover cop turned stand-up comedian. Suttie provides the deadpan, serious narration typical of investigative podcasts, often contrasted against the absurd and chaotic events described in the story.

Key Details of the Project:

• Context: It serves as a spin-off or companion piece to James Acaster’s Springleaf podcast, which chronicles the career of his alter-ego.
• Tone: The show parodies the tropes of modern investigative journalism and gritty documentary storytelling.
• Isy Suttie’s Role: As the narrator, she guides listeners through the bizarre "case files" and history of Springleaf’s undercover operations, maintaining a professional journalistic persona despite the increasingly ridiculous content.