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Secrets of the London Underground

  • 2021-2024
  • 4 seasons
  • Documentary

A look behind the everyday facades of the London Underground network to see how its history and design made it the network we know today.

Season 4 Episode Guide

10 Episodes 2024

Episode 1

Earl's Court / Alperton

43 mins

Tim Dunn and Siddy Holloway explore Earl's Court station where the old and the modern sit side by side.

Episode 2

Paddington / Tottenham Court Road

44 mins

Tim Dunn and Siddy Holloway explore Paddington station to discover the tunnels hiding clues to the recent past.

Episode 3

Waterloo / Marble Arch

44 mins

Tim Dunn and Siddy Holloway explore the forgotten tunnels underneath one of Britain's busiest stations - Waterloo.

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Episode 4

South Kentish Town / London Underground Control Centre

43 mins

Tim Dunn and Siddy Holloway get exclusive access to the disused station at South Kentish Town.

Episode 5

Thames Tunnel / Lambeth North

44 mins

Tim Dunn and Siddy Holloway explore the very first tunnel under the Thames.

Episode 6

Ruislip Depot / Warren Street

44 mins

Tim Dunn and Siddy Holloway explore the maintenance depot at the end of the Central line.

Episode 7

Northumberland Park / Finsbury Park

43 mins

Tim Dunn and Siddy Holloway explore the maintenance depot at Northumberland Park.

Episode 8

Stockwell / DLR

44 mins

Tim Dunn and Siddy Holloway explore Stockwell station on the Victoria line.

Episode 9

Gloucester Road / Siemens Factory, Goole

43 mins

Tim and Siddy meet up at Gloucester Road in London's Museum Quarter, a station serving the Circle, District and Piccadilly lines. They also explore the now disused platform that has been turned into an art gallery.

Episode 10

Old Street / Hampstead

44 mins

Tim and Siddy explore the unusual station at Old Street that serves both the Northern line and mainline trains. Tim goes through a tiny doorway to discover a hidden passage and Siddy discovers a staircase last used in the 1920s.

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