Which London Underground line is the fastest?

Winter is coming on the Metropolitan line. Quickly. Well, quite quickly. We're not really sure. Image: Ed Webster

The average London Underground user's need for speed is a phenomenon as remarkable as the notion of shoving steam trains underground in the first place. Dog-eat-dog capitalism in its truest form, the cavalier, arge-barge willingness of Tube users to do anything they can to arrive at their destination 0.45 seconds earlier is formidable.

But escalator jousting can only get you so far in this world. What you really need to know is which Tube line is the fastest.

This, one would imagine, would be a simple case of looking at TfL's official figures and forever remaining content that your dinner party knowledge is a cut above everyone else's. But TfL remains coy about the speed of its services. The official website gives a figure for the average speed on the London Underground – 20.5mph, or 33kph – but no more detail than that.

To make any serious estimation of the fastest Tube line, then, we must look to other sources.

There are two useful bits of information we do have – how long the tracks that comprise each line are, and how long it generally takes to do the whole thing in one go.

To take one of the simple, branch-free lines as an example, the Jubilee runs between Stanmore and Stratford, along a total 22.5 miles of track. If you log onto TfL's journey planner, shove it a short time into the future so it can't account for any live service disruptions, and go, it'll tell you that the journey takes 57 minutes.

TfL's not a liar: she keeps receipts. Image: TfL.

Do the maths, and that’ll tell you that (in theory) the Jubilee line’s overall average speed is 23.7mph.

In theory you can follow that line of inquiry for each line, accounting for the spurious branches of lines like the Central, Northern, Piccadilly, Circle, District and Metropolitan, and come up with a rough estimate for the average speed of the line based on how long it takes to get from one end to the other.

Helpfully, someone else by the name of Michael McHugh has done that before now, and came up with this bar chart to show the results.

Mmmmm, data. Image: Michael McHugh.

The Central line is allegedly fastest, the Victoria and Jubilee are second and third fastest, and the Circle languishes at the bottom of the table.

But it's hardly that illuminating. Some lines have stops closer together, and others have a habit of dithering in certain stations for a while along the way (think lots of District line trains in Earl's Court).

What we do have is some rather patchy indications of where on the network the tube goes especially fast.

The longest gap between two stations is on the north-western end of the Metropolitan line, where the gap between Chesham and Chalfont & Latimer is 3.9 miles. It’s on this part of the network that some of the Tube’s true lovers – its anorak admirers – have gone out and measured speeds with amateur GPS devices.

As the network is above ground at this point (as it is for approximately 60 per cent of the entire London Underground system, ironically), you get pretty good signal, so you can clock up the speed that the train is travelling at.

With the old A-stock trains (the ones recently retired when the shiny, walk-through S7/S8 trains were introduced on the Hammersmith & City, District, Circle and Metropolitan lines), speeds of around 70mph have been allegedly recorded in running service – the allegedly is important, though. None of this is official test conditions, and it’s mostly the handiwork of a bloke spending a Saturday afternoon as God intended.

The old A-stock train, here near Chorleywood station. Image: Antje.

Disclaimer having been said, that’s an impressive speed, and it’s likely that this is the fastest part of the network. When you’ve got 3.9miles of track to play with, you can bounce along quite merrily before you have to slow down for the next station.

What we don’t have that many of are figures for the new trains, the S7 and S8 stock. Being new and shiny, the assumption might be that these trains can go faster, but in reality the opposite is true. The S-stock may benefit from faster acceleration than the A-stock trains, at 2.9mph per second; but the top speed is 8mph down on the older models, down to 62mph.

Looking at the maximum speeds that the rolling stock themselves are capable of is a useful tool. The Victoria line’s 2009 stock is capable of 50mph, while the Jubilee line’s 1996 stock can do 62mph, like the new S-stock trains.

Acceleration, acceleration, acceleration - an alternative Blair slogan. Image: Matt Buck.

The Northern line’s 1995 stock is theoretically capable of 62mph too, as is the Central and Waterloo & City line’s 1992 stock, but in practice this isn’t the case. The Northern line is deliberately limited to 45mph in its underground sections due to the infrastructure of the tunnels, and on most lines you won’t get the chance to go that fast because the stations are too close together.

What really does matter, though, is acceleration – which is why many people assume that the Victoria line is the fastest. While its acceleration is nominally the same as the S7 and S8 stock, at 2.9mph per second, the Victoria line itself was built with hump-backed stations, meaning trains decelerate uphill into stations, storing gravitational potential energy, and accelerate downhill out of them, releasing it and increasing acceleration.

In safety terms, too, it’s in passengers interests for trains not to run that fast. The slower trains run, the closer they can safely run together, as stopping a reasonably slow-running train from crashing into the one in front should something go awry is easier than halting a 62mph, 1996 stock from bumping into the back of the next train on the line.

Essentially, if you’re seeking thrills on the Underground underground, hop on the Central or Jubilee lines in their central sections. If you’re a speed-chaser who doesn’t mind being above ground, catch a Metropolitan line out in the sticks of the artist formerly known as MiddlesexBuckinghamshire. If you’re a fan of acceleration, the Victoria line will give you a quiet thrill.

But if you just like getting from A to B as quickly as possible, the question of which London Underground line runs the fastest probably won’t actually help you that much. Wonkish questions about acceleration, service frequency and station design almost certainly will.

Happy riding.

Jack May is a regular contributor to CityMetric and tweets as @JackO_May.

Mayor Marvin Rees' hope for Bristol: A more equitable city that can 'live with difference'

“I call on everyone to challenge racism and inequality in every corner of our city," Bristol Mayor Marvin Rees says. (Matt Cardy/Getty Images)

When the statue of 18th century slave trader Edward Colston was torn from its plinth and dumped in Bristol’s harbour during the city’s Black Lives Matter protests on 7 June, mayor Marvin Rees was thrust into the spotlight.

Refraining from direct support of the statue’s removal, the city’s first black mayor shared a different perspective on what UK home secretary Priti Patel called “sheer vandalism”:

“It is important to listen to those who found the statue to represent an affront to humanity,” he said in a statement at the time. “I call on everyone to challenge racism and inequality in every corner of our city and wherever we see it.”

48 year-old Rees, who grew up in the city, has since expanded on his approach to the issue in an interview with CityMetric, saying “wherever you stand on that spectrum, the city needs to be a home for all of those people with all of those perspectives, even if you disagree with them.”

“We need to have the ability to live with difference, and that is the ethnic difference, racial difference, gender difference, but also different political perspectives,” he added. “I have been making that point repeatedly – and I hope that by making it, it becomes real.”

What making that point means, in practice, for Rees is perhaps best illustrated by his approach to city governance.

Weeks after the toppling of Colston’s statue, a new installation was erected at the same spot featuring Jen Reid, a protester of Black Lives Matter. However, the installation was removed, as “it was the work and decision of a London-based artist, and it was not requested and permission was not given for it to be installed”, Rees said in a statement.

Bristol may appear a prosperous city, logging the highest employment rate among the UK’s “core cities” in the second quarter of 2019. But it is still home to many areas that suffer from social and economic problems: over 70,000 people, about 15 percent of Bristol’s population, live in what are considered the top 10 percent most disadvantaged areas in England.

In an attempt to combat this inequality, Rees has been involved in a number of projects. He has established Bristol Works, where more than 3,000 young people from economically disadvantaged backgrounds are given work experience opportunities. And is now setting up a commission on social mobility. “Launching a Bristol commission on social mobility is not only about social justice; it [should not be] possible for a modern city to leave millions of pounds worth of talent on the shelf, just because the talent was born into poverty,” he says.

The mayor is also a strong supporter of the UN’s Sustainable Development Goals (SDGs), explaining that SDGs offer a way to talk about sustainability within a framework of many issues, ranging from climate change and biodiversity to women’s issues, domestic violence, poverty and hunger.

“What we want to achieve as a city cannot be done as a city working alone,” he insists. “We don’t want to benefit only people inside Bristol, we want to benefit the planet, and the SDGs offer a framework for a global conversation,” suggesting that a vehicle should be launched that allows cities to work together, ideally with organisations such as the UN, the World Bank and the International Monetary Fund involved.

Greater collaboration between cities would be “beneficial in terms of economies of scale,” he argues, “as cities could get more competitive prices when buying materials for building houses or ordering buses, rather than each city acquiring a few of them at a higher price.”

In an attempt to focus on the long term, Rees launched One City Plan in January 2019, setting out a number of goals for Bristol to achieve by 2050.

Investing in green infrastructure to meet 2030 carbon emission targets spelled out in the SDGs is a key area here, with the mayor noting that transport, mass transit and energy are important sectors looking for further investment and government funding: “The sooner we meet our targets, the sooner we will benefit from them, and invest in sectors that will provide people with jobs.”

Jobs, especially following the outbreak of Covid-19, are of paramount importance to Rees. Bristol’s council wants to ensure that any government money given to the city will be quickly passed on to businesses to help prevent redundancies, he says, though given that mass job losses seem inevitable, reskilling options are also being looked into, such as through a zero-carbon smart energy project called City Leap.

Another important area for investment in Bristol is affordable housing, with 9,000 homes already built under Rees’s term of office. “People could build a base for life with affordable housing, [and this would mean] their mental health would be better because they have a safe place,” he explains. “Children in families that have a home that is affordable are more likely to able to eat and to heat, [and they are more likely to enjoy a] better education.”

Taken in the round, Rees’s agenda for Bristol is its own blueprint for shaping history. The Colston statue now lies in safe storage, with a local museum likely to play host to the controversial monument. But the Black Lives Matters protestors were fighting for a fairer, more equal future, and it is here where Rees is determined to deliver.

Sofia Karadima is a senior editor at NS Media Group.