56106 was delivered new to 5D (on loan) in September 1957 paired with 50351. It was withdrawn in July 1983.

It went into departmental use as part of the Crewe Works test train numbered 977191.

977191 seen at Chester, on the 5th April 1986. Paul Moxon

ADB977191 with Class 127 parcels conversions  set 915 M55975+M55985, M55969+M55968, 914 M55980+M55984, 911 M55970+M55971, Crewe Basford Hall 24-9-89. Kevin Dowd

Taken during the Basford Hall open day, 21/8/94. Robert Frise

Still rotting away quietly at Crewe in the company of Class 304 unit no. 013 and some Mk Is, in April 1997. Robert Chilton

During movement from Crewe, 19th February 2000. Full Story. Frank Nicholas

For further pictures see the gallery 'Farewell to Crewe'.

It was ultimately cut up by Adtranz at Crewe in 2000.