from the 1985 diary:
Chester - 21st November 1985
47444 - Large Logo Blue with one of the test train rakes
47631 - Large Logo Blue with the other test train rake
so both rakes in use on the same day testing ex-works diesels - unfortunately didn't record which rake was which
coaches ADB977148 / ADB977149 / ADB977150 / ADB977151 / ADB977326 / ADB977327 / ADB977081 / ADB975626 / ADB975918 / ADB975627
2 extra coaches in these rakes not id'd above
ADB977326 - ex MK1 CK 16138
ADB977327 - ex MK1 CK 16114