The Funding Challenges Preventing the Original Launch Dates for the New Tube for London (2024 Stock) for the Bakerloo, Central, Piccadilly, and Waterloo & City Lines

A review of historical and recent Freedom of Information (FOI) disclosures outlines the development and subsequent changes to Transport for London's (TfL) plans for upgrading its deep-level Underground lines. What was originally structured as a coordinated programme across four lines has faced adjustments due to changing financial structures, funding constraints, and macroeconomic factors.

Transport for London reveals reason for delays to new 2024 Tube Stock for the Piccadilly line, now expected to enter service between July and December 2026

As I’ve been keeping an eye on the Freedom of Information disclosure log on the Transport for London (TfL) website, I noticed that they have published a response to a member of the public who requested information regarding delays to the 2024 Tube Stock (also known as the New Tube for London) for the Piccadilly line.

This is a follow-up to my previous article, in which I reported on delays to the DLR rolling stock B23, now expected to enter service later in 2025.

The first test train for the new Piccadilly line fleet has arrived in
London 🤩🚆

This train will undergo intensive testing before the new fleet starts entering passenger service by the end of next year.

Find out more 👇https://t.co/KJZWXspHNO pic.twitter.com/0ix3MkEi5c

— TfL (@TfL) October 16, 2024

Request ID: FOI-1609-2526
Date published: 24 September 2025

Interesting FOI Requests to Transport for London – Bus Lane Enforcement on Christmas Day, Update on Central Line Improvement Programme, Piccadilly Line, and More

I will be reviewing various Freedom of Information (FOI) requests that have been responded to and published by Transport for London (TfL), particularly in relation to the current situation involving the Central Line Improvement Programme (CLIP) and the new 2024 Tube Stock for the London Underground Piccadilly Line.

Actual off-peak Oyster times
Request ID: FOI-3161-2425
Date published: 14 January 2025

Key Insights from TfL's Freedom of Information Requests: Electric Buses, New Piccadilly Line Announcements, and Single Justice Procedure Prosecutions

Below are the key insights from Transport for London's (TfL) Freedom of Information (FOI) requests, which I found on their website.

I hope you find this information helpful.

Request ID: FOI-2649-2425
Date published: 02 December 2024

Electric Buses

Question: It has come to my attention that only a handful of Electric buses last on routes 24/7 without using Diesel or Hybrid vehicles to cover. What action will be taken to ensure that Electric buses are able to remain on routes throughout the day and night?

The 'New Tube for London' for the Piccadilly Line Under Construction in Goole, UK, and 32 Enviro100EV Small Electric Buses for London Bus Routes 233, R1, R3, R4 and R8

The New Tube for London under construction and the Enviro100EV - © Siemens and Alexander Dennis

Today (3rd October) has been big news for manufacturing in England as we see the 'New Tube for London' 2024 rolling stock for the Piccadilly line and 32 Alexander Dennis Enviro100EV small electric buses for London Bus Routes 233, R1, R3, R4 and R8.

From Siemens UK

The Secretary of State for Transport Louise Haigh and the Mayor of London attended the grand opening of the Goole Train Manufacturing Facility, a significant milestone for Siemens Mobility and the future of rail transportation in the region. Alongside the opening, Siemens Mobility announced a substantial investment of up to £40 million in a state-of-the-art Bogie Assembly and Service Centre, further solidifying its commitment to the region.

The new Bogie Assembly and Service Centre will incorporate and expand Siemens Mobility’s current capabilities to overhaul bogies from UK trains, including the 3,224 strong fleet of vehicles (572 trains) it maintains in the UK, and will also include new production lines for assembling bogies for new trains, a first for Siemens in the UK.

TfL and Siemens Mobility Unveil Design of the New London Underground Piccadilly Line Trains

It’s been a while since I’ve posted London Underground related content on my website.

Recently, Siemens Mobility and TfL have unveiled the design of the new Tube Trains for the Piccadilly Line, expecting to enter passenger service from 2025.

From Siemens Mobility Press Release

Transport for London (TfL) and Siemens Mobility have today unveiled the detailed design of the new generation Tube trains for the Piccadilly line, which will soon be in production to replace the existing 1970s fleet.

The trains currently running on the line have become increasingly unreliable and expensive to maintain and will be 50 years old by the time they are replaced. Despite the devastating impact that the coronavirus pandemic has had on its finances, TfL is continuing to replace these assets, meaning that from 2025, new spacious ‘Inspiro London’ trains will serve customers on the Piccadilly line, future-proofed to ensure they are suitable for many years to come.

Strong backing for the Holborn Tube Station upgrades

In their consultation, Tfl reports that 98% of the respondents agreed with the need to upgrade Holborn Station.

From TfL press release

TfL has announced today (Thursday 5 July) that proposals to substantially boost the capacity of Holborn Tube station have received strong backing from the public and local community.

TfL awards Siemens Mobility to build 94 new trains for the Piccadilly Line

TfL ended the rollout for the three-door, two-staircase hybrid New Routemaster bus, but they have now announced that Siemens Mobility will be building 94 new trains for the London Underground Piccadilly Line.

From TfL Press Release

Siemens Mobility Limited to design and manufacture 94 new, state-of-the-art Deep Tube trains to serve the Piccadilly line

Two Rail Adhesion Trains for Piccadilly Line

To reduce delays and disruptions on the Piccadilly Line, TfL has converted two 1973 stock trains to Rail Adhesion Trains (RATs) to tackle wheel flats.

From TfL press release

TfL board papers for 15th December 2016 meeting

As the board papers are out for the final board meeting of this year, I will show you some of the extracts from the selected board papers.

You can view the papers from the board meeting here.

Taking a look at the commissioner’s report.

New Escalator etiquette at Holborn Station

Escalators in Holborn Station

So we can see that London Underground is trialling new etiquette rules for the escalator going up at Holborn station.

From TFL Press Release

LONDON UNDERGROUND TO PILOT NEW ESCALATOR ARRANGEMENT AT HOLBORN TUBE STATION

One of four escalators will be 'standing only' at all times for six months with another standing only at some times of day.

Customers at Holborn station will be asked to stand on both sides of two 'up' escalators, in plans announced today to reduce congestion at the station.

From 18 April the new arrangements will be in place for around six months, with a range of signage and customer information encouraging people to fill up the escalators by standing on both sides. The other 'up' escalator will still be available for people who want to walk.

Upgrades for Piccadilly and Metropolitan Lines

Recently, London Underground announced that engineering works are to take place on the Piccadilly Line on the 5th and 6th March and the Metropolitan Line on the 16th May 2016.

From TFL Press Release

TfL today advised customers planning to use the Piccadilly line this weekend to expect longer journeys, due to planned upgrade work.

To improve the reliability of the Piccadilly and District lines London Underground (LU) is carrying out essential planned work this weekend to replace 700m of track at Turnham Green and renew a set of signalling points at Acton Town.