 The white car driven by Mike Pratt was a "Vauxhall Victor FD". This  was more or less unique to the Randall and Hopkirk show, but is  commonly mistaken for the "Vauxhall Ventora" used in the Department  S show and had a similar but different registration. The Vauxhall  Ventora has a six cylinder engine, therefore a different sound and  has a slightly different grill and lights arrangement at both front  and rear, compared to the Victor.