The move to Coventry also brought the only notable facelift in the car's life, when larger bumpers were fitted and a revised rear number-plate surround. As well as the complete limousine, the factory also supplied part-bodies to external coachbuilders to allow them to construct hearses. Trim levels varied from the base model with wind up windows to a mobile boardroom supposed to become a specific model, that has been told to be used by Jaguar Boss John Egan in 1984, complete with TV, computer, printer and Cocktail Cabinet.
Always hand-made, the DS420 had a fascia very similar to some contemporary Jaguars, particularly the Mark X and 420G, remaining faithful for many years to the old fashioned steering column and to the pencil-thin steering wheel. Two cars have been built in landaulette bodywork by the factory (and apparently none survived), but many have been converted for the wedding car industry. By 1992 the DS420 was the only model in the Jaguar range still using the XK engine, along with other parts of the drive train and suspension, and although the car still appealed to its traditional customers, production was no longer economic.