Who makes trains for London Underground?

The New Tube for London (NTfL) is a London Underground train being built by Siemens Mobility at its facilities in Vienna, Austria, and Yorkshire, United Kingdom. It is part of the Siemens Inspiro family of metro and rapid-transport trains.



In 2026, the primary manufacturer for the next generation of London Underground rolling stock is Siemens Mobility. Siemens is currently delivering 94 "Inspiro London" trainsets for the Piccadilly Line, which are being built at their new high-value rail manufacturing hub in Goole, East Yorkshire, and their facility in Vienna, Austria. These are the first deep-tube trains to feature full air-conditioning and walk-through carriages. Historically, the fleet has been a mix: Alstom manufactured the current Jubilee and Northern line trains, while Bombardier (now part of Alstom) built the S-Stock trains found on the Metropolitan, District, Circle, and Hammersmith & City lines. For the 2026 traveler, the "Siemens Era" represents a massive technical leap, as the new 2024 Stock trains use 20% less energy and provide 10% more capacity, significantly improving the "thermal comfort" of the deep-level tunnels during the increasingly hot London summer months.

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London Underground rolling stock includes the electric multiple-unit trains used on the London Underground. These come in two sizes, smaller deep-level tube trains and larger sub-surface trains of a similar size to those on British main lines, both running on standard gauge tracks.

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London Transport Museum and Walthamstow Pumphouse Museum are examples of venues that have preserved trains from decades ago. Tube carriage scenes in movies have often been shot at these museums and Walthamstow Pumphouse Museum's 1968 Victoria Line Tube carriage even has a monthly supper club.

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It is the first of 94 new Siemens Mobility trains destined for the London Underground and was built at a factory in Vienna before being moved to Siemens' Test and Validation Centre in Wegberg-Wildenrath, Germany.

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Bakerloo line This is the oldest stock still in use on the tube.

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Why are London Underground carriages so small? London Underground carriages are so small because they need to fit into tunnels, many of which were built between 1863 and 1930.

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Alstom is the UK & Ireland's leading supplier of new trains and train services, and a leading signalling and rail infrastructure provider.

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Active companies
  • Brookville Equipment Corporation.
  • Process Locomotives.
  • Colmar.
  • Electro-Motive Diesel.
  • GE Transportation.
  • Harsco Corporation.
  • Katiland Trains.
  • Kloke Locomotive Works.


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  • The world's busiest passenger station, with a passenger throughput of 3.5 million passengers per day (1.27 billion per year), is Shinjuku Station in Tokyo.
  • The world's station with most platforms is Grand Central Terminal in New York City with 44 platforms.


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THE world's first metro, now the world's oldest system, is the London Underground in England, which is more commonly known as the Tube, which was opened in 1863. At 402 kilometers in length the London Underground is also the world's second longest metro system.

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CRRC Corporation Limited It is considered to be the world's largest manufacturer of rolling stock in terms of revenue. Based in China, the company is a state-owned enterprise supervised by the State Council. Some of its subsidiaries include Dalian CRRC Daqi Railway, Nanjing Puzhen, Xi'an Railway, and Yangtze Railway.

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All London Underground Lines (including the W & C) operate at 630 volts DC using third (positive) and fourth (negative) current rails.

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The current operator, London Underground Limited (LUL), is a wholly owned subsidiary of Transport for London (TfL), the statutory corporation responsible for the transport network in London.

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Roding Valley is London's least used tube station. Roding Valley is found on the central line. Roding Valley transports around the same number of passengers in 1 year, that London Waterloo does in 1 day.

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