55027 (L127) is deputising for Class 117 DMS 51404, as it passes South Moreton (Didcot East) on 11 December 1991 with the 2C27 10:48 Oxford to Reading Network SouthEast service. The two remaining vehicles of set L424 (59514 & 51362) are coupled behind the bubble car, thus forming a three car set, albeit without a corridor connection.