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New Trains for Piccadilly Line Delayed by up to a Year

GREATER LONDON, ENGLAND, JUN 20 – The £3 billion upgrade will increase Piccadilly line capacity by 10%, with new trains featuring air conditioning and wider doors, but integration challenges have delayed introduction by one year.

  • Transport for London has delayed the launch of 94 new air-conditioned Piccadilly line trains to the second half of 2026 due to integration complexities.
  • The delay arose because introducing these trains to the nearly 120-year-old Piccadilly line infrastructure proved more complex than testing on the tracks anticipated.
  • The trains, mostly assembled in Goole and manufactured by Siemens in Vienna, will feature walk-through carriages, wider doors, CCTV, real-time displays, and 10% higher capacity than the 1973 stock.
  • The test train has completed 15,000 km without any identified faults, but passengers will still have to wait longer for its introduction; TfL is working closely with Siemens to address the remaining issues, according to the official overseeing the new train rollout.
  • The delay means passengers will face another summer without air-conditioned trains, but TfL and Siemens aim to introduce the innovative fleet as soon as possible for improved journeys.
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New trains for Piccadilly line delayed by up to a year

The rollout of “state-of-the-art” Piccadilly line trains has been delayed by up to a year, TfL says.

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Time Out Worldwide broke the news in on Friday, June 20, 2025.
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