I learned to drive in one of these in 1969, my father had one, plus the Austin k9 and a Bedford too, but it was the Morris 1ton 4x4 he kept as being the best of them.
Longest run I was out on one was Dad towing a car to Campbeltown from Dumbarton around 1968 using the Morris. We also towed a yacht from Balloch at Loch Lomond to Helensburgh, the truck was certainly powerful enough ... the brakes however were diabolical. we did tow a 30ton artic lorry to get it off the road, low range was a big help.
