Transport for London reveals reason for delays to new DLR rolling stock B23, expected to enter service later in 2025

After a long hiatus, the new £942 million Docklands Light Railway rolling stock B23 is finally back in trial service. Transport for London (TfL) has explained the reasons for the delay in response to a Freedom of Information request.

Your exclusive sneak peek of the new DLR trains 👀

Coming soon. Find out more about the new features ⬇️ https://t.co/eYvOKFOfjy pic.twitter.com/DLHxD2aTgt

— TfL (@TfL) September 1, 2025

Request ID: FOI-1452-2526
Date published: 08 September 2025