Less than a month after leaving Doncaster Works, following her last intermediate overhaul, 55015 (D9015) "TULYAR" arrives at Peterborough with the 1L41 10:05 King's Cross - York service on the 2nd June 1979. Note the locomotive retained the glass headcode panel and 'white spot' blinds even after the overhaul. It is believed Finsbury Park replaced these with marker panels early in July - certainly when the locomotive visited Stratford TMD for its open day on the 14th July the marker panels were in place and white cab surrounds had been applied.