Holborn (Season 1 Episode 1 of 6): The abandoned branch line between Holborn and Aldwych. Secrets of the London Underground airs on Yesterday at 8:00 PM, Friday 19 April. The abandoned branch line between Holborn and Aldwych
Brompton Road (Season 2 Episode 4 of 10): Tim Dunn and Siddy Holloway explore the hidden remains of Brompton Road. Secrets of the London Underground airs on Yesterday at 7:00 PM, Thursday 18 April. Tim Dunn and Siddy Holloway explore the hidden remains of Brompton Road
Archway (Season 3 Episode 10): Tim Dunn and Siddy Holloway explore hidden parts of Archway. Secrets of the London Underground airs on Yesterday at 8:00 PM, Friday 12 April. Tim Dunn and Siddy Holloway explore hidden parts of Archway
Acton Works (Season 3 Episode 9): Tim Dunn and Siddy Holloway snoop around TFL's gargantuan maintenance facility - Acton Works. Secrets of the London Underground airs on Yesterday at 8:00 PM, Friday 5 April. Tim Dunn and Siddy Holloway snoop around TFL's gargantuan maintenance facility - Acton Works
Shepherd's Bush (Season 3 Episode 8): Tim Dunn and Siddy Holloway discover the hidden corners of Shepherd's Bush. Secrets of the London Underground airs on Yesterday at 8:00 PM, Friday 29 March. Tim Dunn and Siddy Holloway discover the hidden corners of Shepherd's Bush