Kirkdale TMD

Kirkdale TMD (code KK) is a Traction Maintenance Depot located beside Kirkdale railway station in north Liverpool, England. It is the largest depot on the Merseyrail network, located on the Northern Line and is used primarily for stabling units, carrying out minor repair works and cleaning units both outside and in.

Although the largest depot, most of the "heavy" maintenance is carried out at Birkenhead North TMD. Units transfer between the two depots by travelling into Liverpool Central Platform 2, changing ends, then taking the single track, bi-directional Stock Transfer Line to James Street Platform 2, before continuing towards Birkenhead.