of train reporting codes, the Hook Continental was considered a Class 1 train (express passenger) and the route between Liverpool Street and Harwich was assigned the letter F giving a headcode in the format 1Fnn. Even numbers indicated down trains and odd numbers up trains. Relief trains During peak traffic periods in the summers of the mid-1950s, particularly on a Friday night, there would be an additional ferry sailing, requiring several relief trains, these usually being hauled by Thompson B1 class. During the summer of 1957 there was a second train, with third-class only accommodation, which was sheduled to run 10 minutes after the main train, and with three further reliefs available as required. Only one of these reliefs would stop at an intermediate station, Colchester, and only the main train was be advertised in the timetable. In 1980 there was a separate train shown in the working timetable but not shown in the public tiemtable running 20 minutes behind the second of the two published trains. Day Continental The LNER introduced a balancing working to the Hook Continental called the Day Continental which left Liverpool Street in the morning and returned from Harwich in the evening. The last scheduled steam-hauled passenger train to arrive in Liverpool Street was the up Day Continental on 9th September 1962 hauled by a B1 class locomotive and the use of the name Day Continental for a working from Liverpool Street to Harwich in the morning with a return working in the evening continued into the BR diesel era with the timings in 1984 being the exact mirror of those for the Hook Continental. In 1980 the Day Continental was shown as running "as required". BR Diesel days From 1958 haulage of the Hook Continental was entrusted to Class 40 diesels after the first batch of 10 locomotives were allocated to Stratford for use on the premier services in East Anglia. After the move of the Class 40s away from East Anglia the train was usually hauled by a Class 37 diesel and from the mid-1970s the consist included one or two BR Mark 1 2nd class Pullmans that had been reclassified as Open Firsts; these were easily identified as the grey upper section stopped short of the recessed doors leaving each end of the coaches all blue. By 1984 the train ran every day departing Parkestone Quay station at 07:50 Monday-Saturday and 07:28