On the 18th June 2020 there were two ex Northern rail DMU's at Swansea Landore, unbranded but in Northern's purple and blue colours. From my vantage point one was clearly 142012. The second is stabled so close to 142012 that the DMU number is not visible, however, a carriage number 55775 can be seen on the unit. I cannot find this carriage number in my books and therefore cannot identify the DMU number. The carriage number is in a sequence that closely matches those used on 142xxx units operated by Transport for Wales (ex Arriva trains Wales) although it does not seem to have been operated by Transport for Wales. Which 142xxx DMU unit used carriage 55775? Could it be a hybrid unit made up from units that were damaged at some time?