Zephyr car from the summer of 1969

A photo of a Zephyr car, along with two other cars, taken when a family stopped for a cup of tea on a long journey or day trip. I think the third car is a Hillman Imp and the second car is a Morris or Austin, but I’m not certain. I seem to remember the Zephyr was made in two models, the Zephyr 4 and the Zephyr 6, but I don’t know which model this is, and can’t be certain that my memory is correct.

Taken on Kodachrome film dated October 1969 which suggests this photo was taken in the summer of 1969. Unfortunately, the slide has suffered some fungus growth, which can be seen on the final scan.