- 1General Research and 4 files on testing and performance measurement (GEC/1/3/22)
1985-1993, file - 2Footage of wheelslip tests with Intercity 125 (GEC/4/6/25)
1989, item - 3Footage of testing traction propulsion equipment (GEC/4/6/26)
c 1990, item - 4Footage of autocoupler test (GEC/4/6/34)
1977, file - 5Footage of autocoupler test (GEC/4/6/34/1)
1977, item - 6Footage of autocoupler test (GEC/4/6/34/2)
1977, item
