L594 was a little short on 6 May 1990, and required the help of a Class 121 'bubble car' to make it up to a three car set. DMBC 51073 is obviously under repair, leaving just 51104 & 59435 to show the versatility of the first generation DMU fleet by substituting the Class 121 for the missing driving car. It is pictured here at a very rural Didcot North Junction with the 2C21 09:33 Oxford to Didcot 'all stations' Network SouthEast service.