xxBR CL.31 A1A-A1A D5500-Era 5HOR R30120 Hornby BR, Class 31, A1A A1A, D5500 Era 5 2022 Catalogue The first locomotive built under the 1955 British Transport Commission's modernisation plan, D5500 hauled mainline services out of London Liverpool Street. Renumbered to 31018 under the TOPS system in 1974, and withdrawn in 1976; D5500 can now be found within the National Railway Museum.