A number of Class 114 units were converted into Diesel Parcels Units in 1987. This involved removing all the seats, strengthening the floor to take Brute trolleys, and adding roller shutter doors. Most noticeable however was the application of the striking Royal Mail red livery. 55929 (the former 50015) & 54904 (56015) approach Iver station on the late afternoon on 22 February 1990 with a westbound working. This unit had been noted at York the previous day, so presumably has just had a trip down the Est Coast Mainline. The Parcels experiment was short lived, with the last DPU 114 being withdrawn in 1991. This particular unit had a particularly short lifespan in red, from June 1989 to October 1990.