Northern Rail Class 121 121020

121020 is the only diesel-multiple unit based at Torfield TRSMD.

Bubbles, as she is affectionately known, is a Pressed Steel Company diesel railcar built in the 1960s and classified under TOPS as Class 121. She is formed of one carriage, 55020.

She is owned by Northern Rail, carrying a non-standard blue livery with two silver pinstripes.