8 Weaknesses included:
■ LUL relied on a single source for weather forecasts, the output of which conflicted with television and radio forecasts that predicted heavy snow much further in advance.
■ Manual de-icing of the track by drivers with brushes could not keep pace with the speed of the downpour.
■ Train sleet brushes and anti-icing systems were insufficient to deal with the rapid build up of snow under the train shoes.
■ Infraco JNP did not meet all its responsibilities for ensuring the correct fluid was in the anti-icing units and sequencing of the anti-icing trains on the Northern Line in the correct formation, in order that all the track is de-iced consistently.