The Docklands Light Railway is the unsung hero of London transit, and I shall prove it.
Today, it is a sleek, driverless marvel handling over 100 million passenger journeys a year. But back in the 1980s it was a low-budget experiment that critics confidently predicted would be an absolute disaster.
Here is the story of how London’s futuristic "toy train" grew up to save the East End.
1987: The "Toy Railway" Opens for Business
By the early 1980s, London’s historic Docklands were in a sorry state. The shipping industry had moved downstream, leaving behind miles of derelict, silent quays. The government wanted to transform the Isle of Dogs into a shiny new financial district, what we now know as Canary Wharf, but there was a massive problem: nobody could get there.
Building a standard Underground line was deemed way too expensive. The solution? A cheap, cheerful, "light" railway utilising abandoned railway viaducts.
When Queen Elizabeth II officially opened the DLR in August 1987, it was... modest.
- It had just 11 trains and 15 stations.
- The trains were tiny single-car units that were compared to 'Lego' blocks.
- The original stations were so basic they didn't even have roofs to protect passengers from the classic British rain.
The media immediately dubbed it the "Toy Railway," and sceptics laughed at the idea that bankers would ever swap their black cabs for a glorified rollercoaster.
The Driverless Revolution (And the Real Heroes)
The DLR’s claim to fame, of course, is that it is entirely driverless. The trains are controlled by a central computer system, navigating the twists, turns, and tunnels of east London using automated signals.
Naturally, this terrified early passengers. To keep the public from panicking, the DLR introduced Passenger Service Assistants, now known as Train Assistants.
While their official job is to check tickets, operate the doors, and take manual control if the computers have a mid-life crisis, their unofficial job is much more important: acting as a comforting human presence so commuters don't feel like they're trapped in a sci-fi dystopia.
Fighting for the Best Seat in London
Because there is no driver's cab, the DLR accidentally created the single greatest piece of interactive entertainment in the entire London transport network: The Front Seat.
For nearly 40 years, an unwritten rule of London commuting has dictated that if you manage to snag the very front seat of a DLR train, you are legally required to pretend you are driving the train.
It doesn't matter if you are a six-year-old child or a 45-year-old corporate lawyer in a bespoke suit; when that train plunges into the tunnel toward Bank station, you are making internal rocket noises and steering an imaginary steering wheel. It is a rite of passage.
Growing Up Fast
The DLR didn't stay a toy for long. When Canary Wharf exploded into a towering forest of glass and finance in the early 1990s, the tiny railway was suddenly overwhelmed.
Instead of scrapping it, Transport for London doubled down. Over the decades, they:
- Extended the tracks under the Thames to Greenwich and Lewisham.
- Stretched east to London City Airport and Woolwich Arsenal.
- Upgraded the tracks to handle three-car trains.
Today's DLR is a masterclass in urban regeneration. It proved that if you build a quirky, automated railway through an abandoned wasteland, the city will follow it.
Also, because the DLR uses a completely different track-signalling system than the standard London Underground, it is practically immune to regular Tube strikes. So, when the rest of London grinds to a halt, the DLR just keeps quietly trundling along.
What's in a name or colour?
Back in late 2024, the six London Overground lines were rebranded with each line being given a distinct name and colour. The names reflected the history of the area that the line serves or passed through, and the colours were picked so as not to clash, or cause confusion, with the colours of the Underground lines.
So what about the Docklands Light Railway?
Well, the Docklands Light Railway consists of seven lines, yet the entire DLR network is coloured with pale green parallel lines. But, it wasn't always that way.
In 1987 it had just two lines:
- Stratford to Island Gardens (red)
- Tower Gateway to Island Gardens (green)
When the line was extended to Beckton and then Lewisham, the entire line became green. As more lines were added the colour used for the DLR became three varying shades of green, although there were now seven lines.
- All Saints to Stratford (North route)
- Blackwall to Beckton (East route)
- Heron Quays to Lewisham (South route)
- Westferry to Bank & Tower Gateway (West route)
- Poplar, West India Quay and Canary Wharf (Central area)
- West Silvertown to Woolwich Arsenal (London City Airport extension)
- Canning Town to Stratford International (Stratford International extension)
Now that there are plans to extend the DLR out to Beckton Riverside and Thamesmead, and possibly on to Bexley, I wonder if they will choose another shade of green, or give the various lines names, as was done with the London Overground?
