975023
formerly 55001 

New in May 1958, and withdrawn from passenger use in April 1969, when it went into Departmental use as 975023.

1971		About to pass Hinksey South signalbox, Oxford. Adrian Vaughan
30/5/72		Seen at Reading. Through the cab windows you can see the partition to the van has been altered and there is some conventional seating in the van area for the crews that are route learning.  David Mant
1974		The car is standing at Clink Rd up starter, and the guard is walking back to the box. Adrian Vaughan
1982		At Bristol Temple Meads. Robert Tarling
1984		TDB972023 at Lockeaze. Robert Tarling
29/8/90		TDB 975023 (55001) on 2T46 Peterborough to Longsight route learner at New Mills South Junction. Kevin Dowd
25/7/89		At Liverpool Lime Street. Gazza Prescott.
7/5/92		At Holbeck Shed No 6 Road where it had been in use it for road/route learning. Michael Kaye 55A
19/9/93		On 5K23 Longsight to Crewe (Via Macc, Stoke, Stafford) at Cheadle Hulme, 19-9-93. Kevin Dowd
6/11/93		Two views of 975023 at Stockport. Note the windscreen wiper on the centre window. The text after the BR Arrow was its unofficial name, 'Thunderbird'. both Paul Moxon

The vehicle is now preserved.