56020 1977 Doncaster
In 1977 the Romanian built class 56 locos undertook acceptance trials based from Tinsley, the circuit starting from Tinsley, where the test car was kept collecting BBA's from Rotherham and doing a Doncaster-ECML (Peterborough West Yard probably) - Doncaster circuit. As part of the test train a MetCam Pullman car was used during the early commissioning runs but it wasn't the vehicle that eventually became Lab 14.