Or more likely it's an Isuzu Minx PH11 from 1954, based on the Hillman Minx Mk VII.
Isuzu just used the British brochures for their own, hence the English family in the car!
The Isuzu Minx PH12 of 1955 was based on the Mk VIII Minx and had vertical bars for the grille with just one horizontal bar in the middle.