Like land rovers-land cruisers X5`s and the like, they cant see the white lines, too high up so I`ve been told

Our Qashqai is pretty high up too (a la X5) but we have no difficulty whatsoever seeing the lines or using a single space even without the onboard aids. Don't tar all SUV drivers with the sins of the few. Thats kinda like the car equivalent of 'racism'.

In any event our QQ has the four camera system that on one display gives you whats best described as 'Helicopter view' of your surroundings and you can select other views on the screen to see clearly where the white lines are. In fact I don't like the Nissan system much, as compared to the Toyota system in my Yaris HSD since it's resolution is a bit grainy. But the Toyota only has the one camera. Nice to have these things but for me they are not a necessity.

My personal bugbear - those who faff around reversing INTO supermarket parking spaces. Just... why?

It's a lot easier to manoeuvre coming out of the space (you can't steer properly in reverse until you are almost out) and it is safer to pull out forwards into traffic/ pedestrians.

Preicsely. And those who can actually drive properly don't 'faff'. I'm quicker reversing, I can see the lines in the mirrors. Slap bang in the middle, first go.

My method is to angle one of the mirrors (mostly driver`s side) down slightly so one of the lines is visible. If you are straight one side,the other side has to be correct. Yes, it can sometimes be difficult to get a trolley between the cars,but it`s well worth it for the clear view on the way out. How many times do you see some idiot pedestrian walk close to a car reversing out even though the reversing light is on and the engine is obviously running?!!