On Saturday 28th March 1981 55021 (D9021) "ARGYLL & SUTHERLAND HIGHLANDER" runs wrong line into Newark with the 1D02 12:05 King's Cross - Hull service. The down line, on platform No.1, appears to have been re-laid, hence 21's arrival on platform No.2...

...An unusual view of 55021 taken from the Newark footbridge on 28th March 1981. Note the brackets on top of the cab which once supported the roof-mounted air-horns.