Yeah, there were two periods of 180s at Northern
In the Serco years, there were two diagrammed per day on the Blackpool North to Hazel Grove service from three that Northern had at the time (although they didn't always manage two in service at the same time, given reliability)
More recently, Arriva (Northern) borrowed a 180 in the morning peak from Arriva (Grand Central) to provide additional capacity on the Bradford Interchange line on a diagram that then formed a mid-morning Bradford Interchange - London service (i.e. GC weren't needing the train until after the rush hour, so it could be "borrowed" without any GC passengers losing out)
