Northern has formed four threecar Class 1S0s for Rochdale and Manchester-Clitheroe trips. Class 1S0/2s No. 150209 (57209+57212) and No. 150224 (57224+52224) have been disbanded to provide gangwayfitted centre cars. Following on from Nos. 150001/002, the only Class 1S0s built as three-car sets, the new units are numbered 150003 (formerly 150116, plus centre car 57209), 150004 (150112 plus 57212), 150005 (150117 plus 57224) and 150006 (150147 plus 52224).