NaN/100 votesLoading...#1 - Holborn
Season 1 Episode 1 - Aired 7/19/2021
Tim Dunn and Siddy Holloway explore the abandoned branch line between Holborn and Aldwych. And at Holloway Road they find out about the Tube's only spiral escalator.
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NaN/100 votesLoading...#2 - North End
Season 1 Episode 2 - Aired 7/26/2021
Visit one of London Underground’s most secret places: North End under Hampstead Heath. Abandoned before completion, the station became a Cold War bunker.
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NaN/100 votesLoading...#3 - Piccadilly Circus
Season 1 Episode 3 - Aired 8/2/2021
Explore the disused parts of Piccadilly Circus, the grandest station on the London Underground. And they also visit the long-abandoned Highgate surface station.
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NaN/100 votesLoading...#4 - Euston and York Road
Season 1 Episode 4 - Aired 8/9/2021
Explore the hidden parts of Euston, including unique features not found elsewhere and the bits set for demolition for HS2. Siddy also visits York Road station.
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NaN/100 votesLoading...#5 - St Mary's, Aldgate East and Oxford Circus
Season 1 Episode 5 - Aired 8/16/2021
Have a night-time track walk exploring long forgotten stations on the District line in Whitechapel. And they discover how sprawling Oxford Circus was first built.
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NaN/100 votesLoading...#6 - Clapham South and Moorgate
Season 1 Episode 6 - Aired 8/23/2021
Explore Clapham South deep level shelter, where thousands of Londoners slept in the war. They also visit Moorgate, and the remains of a tunnelling machine there.
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NaN/100 votesLoading...#7 - Charing Cross and Kennington
Season 2 Episode 1 - Aired 5/5/2022
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.
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NaN/100 votesLoading...#8 - Waterloo & City and Mark Lane
Season 2 Episode 2 - Aired 5/12/2022
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.
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NaN/100 votesLoading...#9 - King William Street and Knightsbridge
Season 2 Episode 3 - Aired 5/19/2022
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.
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NaN/100 votesLoading...#10 - Brompton Road and St Pauls
Season 2 Episode 4 - Aired 5/26/2022
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.
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NaN/100 votesLoading...#11 - London Bridge and Ongar
Season 2 Episode 5 - Aired 6/2/2022
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.
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#12 - King’s Cross and Marlborough Road
Season 2 Episode 6 - Aired 6/9/2022
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.
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#13 - Elizabeth Line and Angel
Season 2 Episode 7 - Aired 6/16/2022
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.
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#14 - Quainton Road and Kingsway
Season 2 Episode 8 - Aired 6/23/2022
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.
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#15 - Greenwich and Notting Hill
Season 2 Episode 9 - Aired 6/30/2022
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.
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#16 - Baker Street and Edgware Road Signal Cabin
Season 2 Episode 10 - Aired 7/7/2022
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: N/A
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NaN/100 votesLoading...#17 - Camden and Sloane Square
Season 3 Episode 1 - Aired 7/4/2023
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: N/A
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NaN/100 votesLoading...#18 - South Kensington and Marylebone
Season 3 Episode 2 - Aired 7/11/2023
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.
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NaN/100 votesLoading...#19 - Green Park (Dover Street) and Down Street
Season 3 Episode 3 - Aired 7/18/2023
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.
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NaN/100 votesLoading...#20 - British Museum and Leinster Gardens
Season 3 Episode 4 - Aired 7/25/2023
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.
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NaN/100 votesLoading...#21 - West Ashfield and Oval
Season 3 Episode 5 - Aired 8/1/2023
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.
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NaN/100 votesLoading...#22 - Leicester Square and Hyde Park Corner
Season 3 Episode 6 - Aired 8/8/2023
Tim and Siddy are exploring the station in the beating heart of London's theatreland - Leicester Square. It's a place adored by tourists and culture lovers but very few know of the secrets hidden below ground. Siddy reveals the extraordinary previous life of the station office - as a display cabinet for V&A antiquities. The pair then ride what was once the world's longest escalator at 54m, explore layers of the stations design history hidden in unassuming cupboards and see the unique wartime communication infrastructure still stored in abandoned lift shafts. Tim learns more about the work to preserve the networks heritage from TFL's Ann Gavaghan. Siddy visits the tourist hot spot of Hyde Park Corner, where the stunning Oxblood Leslie Green station building has had a renaissance as a high-end hotel. She delves into its abandoned cross passages, adorned by stunning original tiles and reveals enormous fans and gloriously aging stair shafts.
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NaN/100 votesLoading...#23 - Heathrow and Swiss Cottage
Season 3 Episode 7 - Aired 8/15/2023
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.
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NaN/100 votesLoading...#24 - Shepherd's Bush and Elephant & Castle
Season 3 Episode 8 - Aired 8/22/2023
Shepherd's Bush is a fabulous example of how the network has changed and adapted over time and Siddy Holloway knows where all the best bits are, ready to show Tim Dunn. Just off the platforms the pair discover Victorian glass tiles, long abandoned passenger tunnels from the original Central London Line, epic vents with an eye-level view of people on the platforms and a lift shaft with an escalator through the middle. They visit a gigantic cavern hidden within the body of the station and the perfect example of how nature sometimes beats the best laid engineering plans. Siddy delves into Elephant & Castle, a small station that packs a big punch. She discovers what it takes to be at the helm of a train from driver Jennifer, reveals the only original 1890 tiles still visible to the public and the spooky discoveries hidden behind a platform door.
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NaN/100 votesLoading...#25 - Acton Works and South Acton
Season 3 Episode 9 - Aired 8/29/2023
Tim Dunn and Siddy Holloway explore the sprawling TFL maintenance facility - Acton Works. Staying in Acton, Siddy reveals an oddity of Underground history.
Director: N/A
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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!
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...
Genre:Documentary
Network:U&Yesterday
Best Episodes Summary
"Holborn" is the best rated episode of "Secrets of the London Underground". It scored N/A/10 based on 0 votes. Directed by N/A and written by N/A, it aired on 7/19/2021. This episode scored NaN points higher than the second highest rated, "North End".