Prototype Sprinter unit, 150001 arrives at Droitwich with the 10:30 Birmingham New Street to Great Malvern service on 27 April 1991. 150001 had entered service in November 1984, heralding a mass DMU replacement programme that would eventually see the replacement (with the odd exception!) of the entire first generation DMU fleet. This process was not as quick as some would have liked, and it was nearly two decades from the emergence of 150001 until the final Class 101 Metro Cammell units were removed from service.