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The Best Episodes of Secrets of the London Underground

Every episode of Secrets of the London Underground ranked from best to worst. Let's dive into the Best Episodes of Secrets of the London Underground!

Binge this in 1d 2h•Peaking at 8.3/10

Railway historian Tim Dunn and Siddy Holloway from the London Transport Museum explore hidden areas of the London Underground that—despite being just feet away from where millions of people regularly travel—hardly anyone knows about. The

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  1. #1 Fan Favorite
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    Secrets of the London Underground Season 2 Episode 8 - Quainton Road and Kingsway
    8.3/10(13 votes)

    #1 - Quainton Road and Kingsway

    S2:E8

    Tim and Siddy visit Quainton Road in rural Buckinghamshire, 50 miles from central London – and once on the underground. Siddy also explores Kingsway tramway tunnel.

    Director:Unknown
    Writer:Unknown

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  2. Secrets of the London Underground Season 2 Episode 5 - London Bridge and Ongar
    8.2/10(14 votes)

    #2 - London Bridge and Ongar

    S2:E5

    Tim and Siddy explore the disused parts of London Bridge. Siddy visits Ongar in Essex, and nearby Blake Hall which, at the end, served less than 20 passengers a day.

    Director:Unknown
    Writer:Unknown

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  3. Secrets of the London Underground Season 3 Episode 5 - West Ashfield and Oval
    8.2/10(13 votes)

    #3 - West Ashfield and Oval

    S3:E5

    Tube fans would be right in thinking there are 272 Underground stations on the network, but Siddy Holloway has such unique access, today she is taking Tim Dunn to the 273rd. This station only has a west bound platform, no customers and no members of the public will ever board its trains. Situated on the 3rd floor of an unassuming tower block in west London, this is TFL's state of the art training facility. Siddy also heads to one of the oldest and friendliest deep level stations at Oval. She reveals unusual brick lift shafts, surprising ventilation and the international phenomena that started life on a simple station white board. At the depot Tim explores the wild world of experimental and innovative trains and has a mind-blowing experience when he samples hot sauce, homegrown on a tube station platform.

    Director:Unknown
    Writer:Unknown

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  4. Secrets of the London Underground Season 4 Episode 9 - Gloucester Road
    8.2/10(9 votes)

    #4 - Gloucester Road

    S4:E9

    Tim and Siddy meet at Gloucester Road in London’s museum quarter – a station serving the Circle, District and Piccadilly lines. It was built as two separate stations, with the earliest, grander section opening in the 1860s. Tim finds an original footbridge still overlooking the modern platforms, as well as a hidden space where you can still see the brickwork of the early tunnels. Siddy explores the later station – a Leslie Green design built in the early 1900s with original tiles and remains of the lifts still in evidence. Tim and Siddy also explore the now-disused platform that’s been turned into an art gallery. Siddy leaves London to visit Goole in Yorkshire where 70 new Piccadilly line trains are being assembled. She gets a tour of the factory and is allowed on board a new open-plan carriage, being fitted with air conditioning.

    Director:Unknown
    Writer:Unknown

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  5. Secrets of the London Underground Season 2 Episode 6 - King’s Cross and Marlborough Road
    8.1/10(15 votes)

    #5 - King’s Cross and Marlborough Road

    S2:E6

    Tim and Siddy explore Kings Cross St Pancras, including a secret siding and the disused Thameslink station. Siddy also discovers long lost Marlborough Road station.

    Director:Unknown
    Writer:Unknown

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  6. Secrets of the London Underground Season 2 Episode 10 - Baker Street and Edgware Road Signal Cabin
    8.1/10(12 votes)

    #6 - Baker Street and Edgware Road Signal Cabin

    S2:E10

    Tim and Siddy explore the tube station with the most platforms, Baker Street. Siddy visits the disused Edgware Road Signal Cabin with its very last operator.

    Director:Unknown
    Writer:Unknown

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    The 20 WORST Episodes of Secrets of the London Underground

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  7. Secrets of the London Underground Season 3 Episode 3 - Green Park (Dover Street) and Down Street
    8.1/10(16 votes)

    #7 - Green Park (Dover Street) and Down Street

    S3:E3

    Tim and Siddy are heading to a station you won’t find on modern-day tube maps – Dover Street, now known as Green Park. During the Second World War the abandoned passageways and lift shafts of the original station had an incredible second life as the base for the London Passenger Transport Board whose work kept London’s transport moving against all odds. Next, Siddy delves into the abandoned corridors and platforms of Down Street, closed to the public in 1932, and the scene of some of the most pivotal decisions of World War II.

    Director:Unknown
    Writer:Unknown

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  8. Secrets of the London Underground Season 3 Episode 4 - British Museum and Leinster Gardens
    8.1/10(14 votes)

    #8 - British Museum and Leinster Gardens

    S3:E4

    Tim and Siddy embark on a night-time track walk to the abandoned station of British Museum. The pair discover enormous 1930s hand-painted adverts and evocative white tiling. During the second world war it served as a shelter and spine-tingling clues to the children who stayed there during The Blitz can still be seen. Siddy visits the elegant, white-stuccoed houses of Leinster Gardens, which are hiding a stunning secret of the London Underground behind their walls. These aren't all real houses at all, they are in fact, an incredible quirk of the Underground's history of steam.

    Director:Unknown
    Writer:Unknown

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  9. Secrets of the London Underground Season 4 Episode 1 - Earls Court and Alperton
    8.1/10(10 votes)

    #9 - Earls Court and Alperton

    S4:E1

    Tim and Siddy explore Earl’s Court station – a busy interchange on the Piccadilly and District lines. It’s a station that has always embraced innovation. It was the very first station to install a passenger escalator and the first to install automatic lifts. Tim discovers how even today, the station is embracing the modern, with a re-design of the walkways created to fit in with its famous glass roof. Meanwhile, Siddy visits Alperton towards the western end of the Piccadilly Line. It’s a classic example of the famous London Underground architect, Charles Holden, and the design was regarded as futuristic when it was built in the 1930s. Back at our Museum depot in Acton, a dedicated volunteer shows Tim the restored inner workings of a 1930s platform indicator, which used a telegraph system to show passengers the destination of their next train.

    Director:Unknown
    Writer:Unknown

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  10. Secrets of the London Underground Season 4 Episode 10 - Old Street
    8.1/10(9 votes)

    #10 - Old Street

    S4:E10

    Explores the unusual station at Old Street. It serves both the Northern line and mainline trains, and they discover how the platforms and tunnels differ across the two different services. The station has undergone massive changes since it first opened in 1901, and there’s still plenty of evidence of its early years, if you know where to look. Tim goes through a tiny doorway to discover a hidden passage with an original fully-tiled vaulted ceiling. Siddy discovers a staircase last used in the 1920s, which still has the original sign showing the Northern Line tube stops. Siddy visits Hampstead, the deepest station below ground on the entire Underground network. Unsurprisingly, it also has the deepest lift shaft, and she gets to ride on top of the lift to see the record-breaking 55-metre shaft up close. At our Museum depot, Tim meets the first ever female driver on the Victoria line. She talks about working on the tube in the 1970s.

    Director:Unknown
    Writer:Unknown

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  11. Secrets of the London Underground Season 2 Episode 1 - Charing Cross and Kennington
    8.0/10(21 votes)

    #11 - Charing Cross and Kennington

    S2:E1

    Tim Dunn and Siddy Holloway make their way over and explore the disused Jubilee line areas of Charing Cross station, which is now more famous as a film location.

    Director:Unknown
    Writer:Unknown

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  12. Secrets of the London Underground Season 2 Episode 4 - Brompton Road and St Pauls
    8.0/10(13 votes)

    #12 - Brompton Road and St Pauls

    S2:E4

    Tim and Siddy walk the Piccadilly line at night to explore the hidden World War 2 remains of Brompton Road. Siddy reveals the unexpected wartime use for St Pauls.

    Director:Unknown
    Writer:Unknown

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  13. Secrets of the London Underground Season 3 Episode 1 - Camden and Sloane Square
    8.0/10(14 votes)

    #13 - Camden and Sloane Square

    S3:E1

    Tim Dunn and Siddy Holloway explore the labyrinthine Camden Town station, and the forgotten wartime shelter built beneath. Plus, Siddy visits a station which hides a lost river.

    Director:Unknown
    Writer:Unknown

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  14. Secrets of the London Underground Season 4 Episode 6 - Ruislip Depot and Warren Street
    8.0/10(9 votes)

    #14 - Ruislip Depot and Warren Street

    S4:E6

    Tim and Siddy get privileged access to the vast maintenance depot at Ruislip, at the end of the Central line. It’s the nerve-centre for all that takes place on the tube, from routine track repairs to emergency engineering. Tim gets a demonstration of how tracks are replaced, as a crane lifts huge pre-assembled sections of railway track into place. Siddy gets in the driving seat of a machine that moves ballast into place under sleepers to hold the track in position. At Warren Street, on the Northern and Victoria lines, Siddy explores the station’s constant reinvention. It first opened in the early 1900s, was remodelled in the 1930s and then had a massive make-over in the 60s when the Victoria line arrived. At the Museum depot in Acton, Tim meets a poet who has had her work chosen to appear as part of the ‘Poems on the Underground’ series.

    Director:Unknown
    Writer:Unknown

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  15. Secrets of the London Underground Season 2 Episode 2 - Waterloo & City and Mark Lane
    7.9/10(16 votes)

    #15 - Waterloo & City and Mark Lane

    S2:E2

    Tim Dunn and Siddy Holloway go off and discover the hidden world of the Waterloo and City. This is the only line that is entirely underground.

    Director:Unknown
    Writer:Unknown

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  16. Secrets of the London Underground Season 2 Episode 3 - King William Street and Knightsbridge
    7.9/10(14 votes)

    #16 - King William Street and Knightsbridge

    S2:E3

    Tim and Siddy visit King William Street, the earliest disused station on the deep tube. Siddy also sees new life breathed into Knightsbridge’s long-abandoned lifts.

    Director:Unknown
    Writer:Unknown

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  17. Secrets of the London Underground Season 2 Episode 7 - Elizabeth Line and Angel
    7.9/10(14 votes)

    #17 - Elizabeth Line and Angel

    S2:E7

    Tim and Siddy explore the brand new Elizabeth Line – and have access to 2 of its stations weeks before the line opens. Siddy also explores the disused parts of Angel.

    Director:Unknown
    Writer:Unknown

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  18. Secrets of the London Underground Season 3 Episode 2 - South Kensington and Marylebone
    7.9/10(13 votes)

    #18 - South Kensington and Marylebone

    S3:E2

    Tim Dunn and Siddy Holloway explore the disused areas of South Kensington station, with platforms reclaimed by nature and wartime uses. Siddy also heads to Marylebone to reveal the original features on the platforms and the tube infrastructure hidden within the walls of a hotel.

    Director:Unknown
    Writer:Unknown

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  19. Secrets of the London Underground Season 3 Episode 9 - Acton Works and South Acton
    7.9/10(11 votes)

    #19 - Acton Works and South Acton

    S3:E9

    Tim Dunn and Siddy Holloway explore the sprawling TFL maintenance facility - Acton Works. Staying in Acton, Siddy reveals an oddity of Underground history.

    Director:Unknown
    Writer:Unknown

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  20. Secrets of the London Underground Season 4 Episode 2 - Paddington and Tottenham Court Road
    7.9/10(10 votes)

    #20 - Paddington and Tottenham Court Road

    S4:E2

    Tim and Siddy go under the platforms of Paddington station. It has five different tube lines running through it, with its oldest and newest lines opening 150 years apart. Tim explores a tunnel still in use under the mainline station, but with intriguing clues as to its original purpose. Siddy discovers some former police cells underneath the platforms, and unearths what remains of the luggage carousels from when passengers on the Heathrow Express were allowed to check-in their luggage in the main station. At Tottenham Court Road, Siddy reveals the huge changes to the station to accommodate the Elizabeth line, and tells the story of how the station’s iconic mosaic artwork was preserved during the works. She also takes us behind a locked door to uncover a floodgate installed as part of Britain’s Cold War defences. Back at our Museum depot in Acton, Tim meets a young tube driver who’s built up a large following on social media for her posts showing behind the scenes of her job.

    Director:Unknown
    Writer:Unknown

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  21. Secrets of the London Underground Season 4 Episode 3 - Waterloo and Marble Arch
    7.9/10(9 votes)

    #21 - Waterloo and Marble Arch

    S4:E3

    Tim and Siddy explore the forgotten underground passages and tunnels underneath one of Britain’s busiest railway stations, Waterloo. Tim gets a tour of a hidden world underneath the main concourse, which includes a former typing pool, a rifle range and a full-size snooker table gathering dust. As a member of our Hidden London team, Siddy has the key to unlock a door to a secret room at the end of a Bakerloo line platform. She discovers a floodgate which would have sealed the tunnel entrance during German bombing raids over London during the Second World War. Siddy visits Marble Arch on the Central line, and meets the artist who created an iconic series of enamel artwork on the platforms in the 1980s. Each depicts the Marble Arch in a different design, and they’re still in pristine condition after 40 years. Siddy hears how the designs came about, and how the artist had to learn the intricate craft of working with enamel to realise her vision.

    Director:Unknown
    Writer:Unknown

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  22. Secrets of the London Underground Season 4 Episode 4 - South Kentish Town and London Underground Control Centre
    7.9/10(10 votes)

    #22 - South Kentish Town and London Underground Control Centre

    S4:E4

    Explore South Kentish Town a station once on the Northern line,but abandoned more than a century ago. Tube trains still run through it, creating an eerie atmosphere and the spookiest sound they’ve ever heard in a tube station. They explore the disused passageways, reveal the ventilation shafts still working to keep air circulating on the Northern Line today, and tell the story of the passenger once stranded at the station after getting off a train by mistake. At a secret location somewhere in zone 1, Siddy gets a behind the scenes tour of the London Underground Control Centre. It’s the hi-tech mothership of the entire network, sitting in an enormous control room, running operations, power, policing and track access from one central hub. It includes a huge multi-screen display, which can show simultaneous live feeds from any of the 12,000 CCTV cameras on the underground. Tim meets one of the underground’s buskers to hear the secrets to her craft

    Director:Unknown
    Writer:Unknown

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  23. Secrets of the London Underground Season 4 Episode 8 - Stockwell and The DLR
    7.9/10(9 votes)

    #23 - Stockwell and The DLR

    S4:E8

    Explores the rich history of Stockwell station on the Victoria line. It was originally the terminus station for the City and South London Railway – the first ever deep level electric tube railway in the world, and the birth of the tube as we know it. Tim finds evidence of a deep level shelter used by Londoners during the Second World War. On the platforms, he reveals something rather more contemporary – the tiles depicting a swan in homage to a local pub. As Siddy descends deep into the station, she finds metallic tiles on the walls and cast iron segments in a disused lift shaft, each crucial relics of their era. Siddy visits the main depot for the DLR. She hears how they’re developing new technology to alert them to any passengers on the tracks. And she gets a preview of their new fleet of trains currently on test runs along the network. At the Museum depot, Tim explores the items in their collection charting the history of the DLR, including models of the original 1986 trains.

    Director:Unknown
    Writer:Unknown

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  24. Secrets of the London Underground Season 2 Episode 9 - Greenwich and Notting Hill
    7.8/10(13 votes)

    #24 - Greenwich and Notting Hill

    S2:E9

    Tim and Siddy visit the cathedral-like Greenwich Power Station, which stands ready to power the tube at short notice. Siddy visits hidden parts of Notting Hill Gate.

    Director:Unknown
    Writer:Unknown

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  25. Secrets of the London Underground Season 3 Episode 7 - Heathrow and Swiss Cottage
    7.8/10(13 votes)

    #25 - Heathrow and Swiss Cottage

    S3:E7

    Tim Dunn and Siddy Holloway pack their bags to go on a trip around the sprawling Heathrow Airport underground stations - the first ever underground rail link between an airport and a city. They start their trip at the original Heathrow Central, now Heathrow Terminals 2 and 3, stopping off at Hatton Cross, with its eye-popping 70's mosaic tiling and speedbird logos, before they finally reach the futuristic 80's design of Terminal 4. Finally, they embark on a special trip along the Heathrow loop, the tube tunnel link which passes underneath the runway. Climbing through the driver's cab, they alight at a secret platform to explore a ventilation shaft and emerge above ground to the sound of aircraft. Next, Siddy heads to north west London to delve into Swiss Cottage station, one of the first stations to be built on the expanding Metropolitan Railway. With those original platforms closed to the public 80 years ago, she explores what remains of that forgotten world.

    Director:Unknown
    Writer:Unknown

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Best Episodes Summary

"Quainton Road and Kingsway" is the best rated episode of "Secrets of the London Underground". It scored 8.3/10 based on 13 votes. Directed by Unknown and written by Unknown, it aired on 6/23/2022. This episode scored 0.1 points higher than the second highest rated, "London Bridge and Ongar".