DLR customers are set to benefit from the phased reintroduction of the network’s new trains by late summer, following major progress by engineering teams across Transport for London (TfL). Engineers have completed detailed investigations, extensive testing and robust assurance work to ensure the trains can safely and reliably re-enter service. TfL has confirmed that further details on the rollout will be shared in the spring.
The new trains were temporarily withdrawn in late 2025 after a single incident in which one unit stopped beyond its intended position — the only such event since the new trains were introduced. With safety as TfL’s top priority, all three trains were removed from service as a precaution while experts worked closely with manufacturer CAF to identify the root cause and develop a safe plan for reintroduction.
To enable the fleet’s return, engineers are implementing a focused package of improvements, including braking software upgrades designed to boost performance under the low rail adhesion conditions present during the incident. These enhancements are currently undergoing testing at the manufacturer’s test track ahead of further trials on the DLR network. Some network closures will be required to facilitate the testing programme, so customers are advised to check the latest updates via the TfL Go app or the Journey Planner on the TfL website.
Once fully rolled out, the new fleet will replace the oldest trains on the DLR and increase overall capacity by more than 50 per cent. Passengers can expect modern walkthrough carriages, air‑conditioning, improved accessibility, real‑time travel information and enhanced safety features — all aimed at delivering a more comfortable, reliable and accessible railway.
Stuart Harvey, TfL’s Chief Capital Officer, said:
“We know customers are looking forward to travelling on these new trains, and we will provide a further update in the spring, with the trains being reintroduced by summer."
"Our engineers, together with CAF and our franchisee KeolisAmey Docklands, have worked tirelessly to ensure they return safely and reliably. We are confident customers will welcome the extra space, improved accessibility, real‑time travel information and air‑conditioning these trains provide.”
Image credit: TfL
