This remarkable car can be seen in action in this mp4 video. Although the images are a bit stretched, it is a nice contemporary document showing an Isis (with an extra door?) used by a Dog Patrol.

Still from the Dog Patrol video (1)

Still from the Dog Patrol video (2)

Still from the Dog Patrol video (3)

Staffordshire Morris Isis 604 RRF

Staffordshire Morris Isis 605 RRF and A40

Lancashire black 1959 Morris Isis Estate 453 BTE

Isis FGR 976 (1955-1956) in Scotland