(18 Feb 2025, 8:11 pm)XQ Zero wrote The first new unit to operate to Sunderland and South Hylton in passenger service was introduced today, 18 February 2025.
New Metro fleet enters customer service on the Sunderland line | nexus.org.uk
An item on Railforums states that diagram T102 is the diagram involved. It is Monday to Friday only for the time being.
Exactly 2 months after it entered service on the Yellow Line