Transport for London (TfL) has unveiled the design for the new Piccadilly Line underground trains, which will begin operation on the line in 2025.
Delivered in association with engineering firm Siemens, the new trains will have 10% greater capacity than the older models they are replacing and use 20% less energy.
This will help TfL boost capacity on the line and support its green ambitions.
The new underground trains will be the first air-conditioned models to be introduced to a deep-level Tube line and will replace the current fleet, which were introduced into service back in the 1970s.
From mid-2027, the frequency of trains in peak hours on the line is anticipated to rise from 24 to 27 trains per hour.
TfL commissioned an initial 94 trains, half of which are expected to be built at the new Siemens plant at Goole in Yorkshire.
Speaking at an unveiling event, London Mayor Sadiq Khan said: “These much-needed new trains will be a great step forward for our city, improving frequency, reliability and capacity on the Piccadilly Line.
“The continued modernisation of the Tube – which has seen a transformation over the last two decades – is a key part of my Transport Strategy to make London a greener, more affordable, more accessible place.
“But we need investment to continue this work. I will keep lobbying the Government to deliver a long-term, viable funding model for TfL, which would enable us to carry out more upgrades to the network’s ageing infrastructure, boost our economy and deliver a green recovery for London and the wider country.”