RoyC suggested Daimler New Fifteen from the late 1930s in the abandoned classics thread, but looking at photos on line, this one has an xtra side window and split rear window.
The Saloon is the six-light version and the Sports Saloon is the four-light version. Daimler also built a lower-priced Lanchester-branded version of the six-light, without the Daimler "waterfall" grille.