The Class 507 units were introduced between 1978 and 1980 ousting the venerable LMS Class 502 and 503s. However, time has now been called on the new units now being over forty years old with the imminent introduction to service of the Class 777 Stadler units, see..... https://www.ontheupfast.com/p/21936chg/29021665404/x777004-02-44-dollands-moor-kirkdale 507005 stands stabled in one of the sidings at New Brighton station.