Whereas American styling abandoned the vertical grille towards the end of the 1930s, most British cars did not follow suit until the 1950s, some brands being slower than others in making the transition (traditionalists Rolls-Royce and Bentley did not 'modernise' their grilles until recently).
The 1948 Sunbeam-Talbot 90 along with the Jowett Javelin and the Standard Vanguard, both introduced in 1947, represent England's first echelon of postwar automobiles incorporating "envelope" bodies and other modern styling touches.
I have no serious complaints about the Alpine's styling, especially when taking into account where and when it was conceived. My main suggestion would be to add a trace of a rear fender, emerging about two-thirds up the side of the car and about half the distance between the door and the rear wheel opening. This would help lighten slightly the heavy appearance of the rear third of the car. A much more costly improvement would be to move the passenger compartment about one foot (30 cm) to the rear. This would provide a longer hood and better balance to the design which basically was that of the drophead coupe with the rear seat eliminated.