A complete waste of the units when operators are desparate to get hold of them for the type of journeys for which they were designed. It shows what a shambles the rolling stock situation is when there is a desperate shortage of suburban multiple unit stock and yet only a handful of new units are authorised and under construction, over a year after the government trumpeted its "1300 new vehicles".
One problem is so many trains have been made in 2 or 3 car combination. Even the 185s that went to Transpennine Express were built as 3 car, with
DfT» ignoring the facts that showed enough demand for 4 car 185s. Now it's predicted that the North Transpennine routes (Liverpool/Manchester/Man Airport to Hull/Scarborough/Middlesbrough/Newcastle) will soon have an
off-peak capacity equal to 125% of it's seating capacity.
Also it is a waste for Northern to have a 5 carriage unit sitting at a depot in the peak periods. Apparently, it's needed as Northern wouldn't be able to send a 142, 150, 153 or 156 to rescue a 180 if one broke down (no 144s, 155s or 158s are based in the north west), but surely a loco engine could be kept at a depot and the spare 180 could be in service at peak times.