8.2/1012 votesLoading...#1 - 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.
Director: N/A
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- 8.2/1011 votesLoading...
#2 - 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.
Director: N/A
Writer: N/A
8.2/1012 votesLoading...#3 - 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.
Director: N/A
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8.2/1011 votesLoading...#4 - 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.
Director: N/A
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8.1/1019 votesLoading...#5 - 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.
Director: N/A
Writer: N/A
8.1/1012 votesLoading...#6 - 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.
Director: N/A
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- 8.1/1011 votesLoading...
#7 - 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
Writer: N/A
8.1/1013 votesLoading...#8 - 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
Writer: N/A
8.0/1013 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.
Director: N/A
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- 8.0/1013 votesLoading...
#10 - 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.
Director: N/A
Writer: N/A
8.0/1013 votesLoading...#11 - 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.
Director: N/A
Writer: N/A
7.9/1015 votesLoading...#12 - 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.
Director: N/A
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- 7.9/1012 votesLoading...
#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.
Director: N/A
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- 7.9/1011 votesLoading...
#14 - 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.
Director: N/A
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7.9/1011 votesLoading...#15 - 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.
Director: N/A
Writer: N/A
7.9/109 votesLoading...#16 - 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
Writer: N/A
7.9/107 votesLoading...#17 - Earls Court and Alperton
Season 4 Episode 1 - Aired 7/2/2024
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: N/A
Writer: N/A
7.8/1011 votesLoading...#18 - 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.
Director: N/A
Writer: N/A
7.8/109 votesLoading...#19 - 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.
Director: N/A
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7.8/106 votesLoading...#20 - Gloucester Road
Season 4 Episode 9 - Aired 8/27/2024
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: N/A
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7.7/1010 votesLoading...#21 - Archway and Emergency Response Unit
Season 3 Episode 10 - Aired 9/5/2023
Tim Dunn and Siddy Holloway have access to the secret spaces of Archway, from cavernous lift shafts to sealed off tunnels. Siddy also visits the Tube's own Emergency Service.
Director: N/A
Writer: N/A
7.7/107 votesLoading...#22 - Old Street
Season 4 Episode 10 - Aired 9/3/2024
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: N/A
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7.6/1010 votesLoading...#23 - 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.
Director: N/A
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7.6/107 votesLoading...#24 - Paddington and Tottenham Court Road
Season 4 Episode 2 - Aired 7/9/2024
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: N/A
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7.6/107 votesLoading...#25 - Ruislip Depot and Warren Street
Season 4 Episode 6 - Aired 8/6/2024
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: 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
"London Bridge and Ongar" is the best rated episode of "Secrets of the London Underground". It scored 8.2/10 based on 12 votes. Directed by N/A and written by N/A, it aired on 6/2/2022. This episode scored 0.0 points higher than the second highest rated, "Quainton Road and Kingsway".