S3 E7 ∙ Heathrow ∙
Tim Dunn and Siddy Holloway head to the sprawling Heathrow Airport underground stations - the first ever underground rail link between an airport and a city.
All episodes for series 3 of Secrets of the London Underground
S3 E1 · Camden
Tim Dunn and Siddy Holloway head to London's iconic Camden Town station.
S3 E2 · South Kensington
Tim Dunn and Siddy Holloway begin their journey at South Kensington.
S3 E3 · Green Park
Tim Dunn and Siddy Holloway are heading to Dover Street, now known as Green Park.
S3 E4 · British Museum
Tim Dunn and Siddy Holloway head to the abandoned station of British Museum.
S3 E5 · West Ashfield & Oval
With unique access, Siddy Holloway takes Tim Dunn to the 273rd Underground station - West Ashfield.
S3 E6 · Leicester Square
Tim Dunn and Siddy Holloway explore Leicester Square station.
S3 E7 · Heathrow
Tim Dunn and Siddy Holloway head to the sprawling Heathrow Airport underground stations.
S3 E8 · Shepherd's Bush
Tim Dunn and Siddy Holloway discover the hidden corners of Shepherd's Bush.
S3 E9 · Acton Works
Tim Dunn and Siddy Holloway snoop around TFL's massive maintenance facility - Acton Works.
S3 E10 · Archway
Tim Dunn and Siddy Holloway explore the hidden parts of Archway.
