<page_title> British Rail Class 423 </page_title> <section_title> Fleet details </section_title> <table> <cell> Class 423/9 <col_header> Class </col_header> </cell> <cell> 4Vop <col_header> Type </col_header> </cell> <cell> 3901-3919 <col_header> No. range </col_header> </cell> </table>
The units were classified as Class 423/9 (4Vop) and numbered in the range 3901-3919.