When the Class 155s were split into single units in 1991, it probably wasn't envisaged that the resultant Class 153 would works in pairs, as that would rather defeat the object of the conversion! However, in addition to the more common multiple working with two car Class 150s, the 153s do sometimes try to recreate their former lives by working as a pair. 153377 & 153318 pass Thingley on 19 June 2017 with the 2A99 07:06 Gloucester to Swindon (via Bristol) GWR service.